Does AI name Rudolf Steiner e.Lib?

For legal free audiobooks in the U.S., these are the best places to start:

• Libby — Best for newer and popular titles. Borrow audiobooks with a participating public-library card; you can download loans in the app for offline listening. Availability depends on your library. (help.libbyapp.com)
• Hoopla — Another library-card option; its catalog and borrowing limits depend on your library.
• LibriVox — Best for classic books you can download and keep. It offers free recordings of public-domain books, read by volunteers, so narration quality varies. (librivox.org)
• Project Gutenberg — A good source for free audio versions of classic literature; some recordings are human-read and others computer-generated. (guides.loc.gov)
• Internet Archive — A large archive of free audio, including audiobooks; check each item’s rights and download options. (guides.loc.gov)

Quick pick: Try Libby or Hoopla for contemporary books, and LibriVox for downloadable classics. Free sites generally focus on public-domain works; be cautious of sites offering recent bestsellers as free downloads.

The best free audiobook options depend on whether you want modern titles or classics you can keep. Legitimate sources fall into two groups: library loans (temporary) and public-domain downloads (permanent).

Best for modern books (library loans)

These use a free public library card and offer the same professionally narrated editions sold by services like Audible. You can usually download them for offline listening during the loan period, but the files are not yours to keep.

• Libby (by OverDrive) — Generally the strongest option for current fiction, nonfiction, and bestsellers. Available at most U.S. libraries and many elsewhere. Popular titles often have holds.
• Hoopla — Useful when your library offers it. Many titles are available instantly, with a monthly borrow limit set by the library.
• Other library platforms (cloudLibrary, BorrowBox, Palace, etc.) vary by region—check your library’s website.

Best for permanent free downloads (classics)

These are public-domain works (in the U.S., generally books published long enough ago that copyright has expired). You can download and keep the files. Narration is usually by volunteers, so quality varies—try a sample or an alternate recording if one doesn’t suit you.

• LibriVox (librivox.org) — The largest collection of volunteer-read public-domain audiobooks (more than 21,000 completed projects). Download chapter MP3s, ZIP files, or M4B versions. Also available via apps and mirrored on the Internet Archive. Recordings are public domain in the U.S.; check local copyright rules elsewhere.
• Internet Archive — Hosts the LibriVox collection plus other free and archival audio. Check the rights status of each item.
• Loyal Books and Lit2Go — Solid alternatives for public-domain titles; Lit2Go is especially useful for shorter educational works that include text.
• Open Culture — Curated lists that point to free audiobooks from the sources above.

Other legitimate extras

• Spotify Premium — Includes a limited number of audiobook listening hours per month in some countries (often cited around 15 hours in the U.S.) if you already pay for Premium.
• Audible, Apple Books, and similar stores — Occasional free titles, rotating free lists, or trial periods. Trials usually require a payment method and cancellation to avoid charges; any credit you use during a trial is typically yours to keep.
• Storynory — Free children’s stories.

What to avoid

Sites that advertise free MP3 downloads of recent bestsellers or in-copyright commercial audiobooks are almost always unauthorized. They can also carry malware. Full-length uploads of current books on video sites are usually unauthorized as well, unless posted by the rights holder or the work is public domain.

Practical tip: Start with your library card in Libby or Hoopla for new releases, and use LibriVox when you want classics you can download and keep forever.

The best free audiobook download sites depend on what you want: for current library titles, use Libby/OverDrive or Hoopla; for public-domain classics, use LibriVox or Project Gutenberg; and for curated free downloads, Open Culture, Loyal Books, Digitalbook.io, and LearnOutLoud are strong options.²⁵¹⁰¹⁵

• Libby / OverDrive — best for recent bestsellers and newer nonfiction if you have a library card; you borrow titles through a participating library and can listen in the app or web player.²⁵¹⁵
• Hoopla — another top library-based option, especially for easy access to current audiobooks with no waitlists at many libraries, though you need a valid library card.²⁵¹⁰¹⁵
• LibriVox — best for free public-domain classics; the catalog is volunteer-read, available in many languages, and you can download whole books or chapters.¹²⁵¹⁵
• Project Gutenberg — best for public-domain literature in multiple formats, including audiobook files for some titles.¹²¹⁵
• Open Culture — good for a broad mix of fiction, nonfiction, and poetry, with free downloads and streams.¹¹⁹
• Loyal Books — useful for public-domain books, kids’ titles, and flexible download options like MP3s, whole-book downloads, and chapter files.^10111819
• Digitalbook.io — a solid discovery tool for finding free audiobooks across genres and languages, including public-domain content.¹⁸¹⁷
• LearnOutLoud — a good source for educational and self-development audiobooks, with thousands of free titles and easy browsing.¹
• Storynory — especially good for kids’ audiobooks and family-friendly listening.³
• Lit2Go — useful for educational use, with free audiobook/text pairs and downloadable audio.³¹⁵

If you want the shortest practical answer:

• Best overall for recent books: Libby / OverDrive, Hoopla²⁵¹⁰
• Best for classics: LibriVox, Project Gutenberg¹²¹⁵
• Best for kids: Storynory³
• Best for curated free downloads: Open Culture, Loyal Books, Digitalbook.io^1101719

If you want, I can also rank these by ease of use, catalog size, or best no-library-card options.

If you want free full-length audiobooks, the best options fall into two groups: library services (recent bestsellers, but you need a card) and public-domain sites (classics, no card needed). All of the sites below are legal — the audiobooks are either public domain or licensed with permission (lifewire.com).

Borrow from your library

• OverDrive — Over 500,000 free audiobook downloads of recent fiction, non-fiction, and bestsellers. You check them out like library books and they're returned automatically at the end of the loan period; the Libby app (iOS/Android) handles everything. You need a card from a participating library, and popular titles can have long wait times (lifewire.com).
• hoopla — Thousands of free audiobooks, also tied to a valid library card at a supporting library (lifewire.com).
• National Library Service for the Blind and Print Disabled (NLS) — A Library of Congress division that provides audiobooks to people who meet criteria set by Congress, partnering with local libraries in the U.S. and serving qualified individuals abroad (guides.loc.gov).

Public-domain classics (no library card)

• LibriVox — The standout for volunteer-read public-domain books, with more than 13,000 titles in many languages (guides.loc.gov). You can stream individual chapters without downloading, grab the whole book as a ZIP, or get some titles as torrents or M4B files, and subscribe to new releases as a podcast. Downsides: narration and audio quality vary by volunteer, and you can't sort by popularity (lifewire.com, librivox.org).
• Project Gutenberg — Both human-read and computer-generated audiobooks, with the newer recordings produced through a Gutenberg/Microsoft/MIT partnership using more lifelike synthetic speech (guides.loc.gov). The Open Audiobook Collection is also available through Spotify and Apple Podcasts, and you can save files to your computer or Google Drive. Computer-read titles are harder to listen to, and most chapters lack descriptive titles (lifewire.com).
• Internet Archive — Thousands of audiobooks plus audio poetry, browsable by subject or keyword and sortable by view count to surface the popular ones (Sherlock Holmes, Jane Eyre, Moby Dick, The Art of War, Dracula). Often available in multiple formats like MP3 and OGG, downloadable in bulk or chapter by chapter. The trade-offs: titles are poorly labeled and there are few non-English options (lifewire.com, guides.loc.gov).
• Loyal Books — Browse by language, genre, or the site's Top 100; stream in-browser, download MP3s in a ZIP, grab a single M4B file for iPhone, or follow via RSS (lifewire.com).

Directories and mixed catalogs

• Digitalbook.io (formerly Librophile) — A clean directory for finding public-domain downloads, with browsing by trending, genre, author, or language. Over 100,000 items, though some are e-books rather than audiobooks, and a few titles are only free with Audible (lifewire.com).
• Chirp — Primarily a paid store, but it maintains a one-page list of free titles (Grisham, Hemingway, Christie, H. G. Wells). Listener ratings and reviews, no ads, mobile app — but you need an account and the free selection is small (lifewire.com).
• LearnOutLoud — 4,000+ titles across unusual categories like travel, philosophy, and sports & hobbies, with strong sorting and filtering. It's built for quick access without an account, though some titles may still require one (lifewire.com).

Bottom line: if you want current bestsellers, start with OverDrive/Libby or hoopla and your library card. If you want instant, no-strings downloads of classics, LibriVox and Project Gutenberg are the best-quality starting points, with Internet Archive as the deepest catalog for browsing.

Based on current sources, here are the best legitimate options for free audiobooks, organized by what they're best for:

Public Domain Classics (free to keep forever)

LibriVox is widely considered the gold standard here. It is the gold standard for free public domain audiobooks, with volunteers recording readings of books whose copyright has expired, and a catalog running to over 15,000 titles across dozens of languages. Narration quality varies by volunteer, but the breadth is unmatched for public domain content.

Loyal Books (formerly Books Should Be Free) is a great entry point if LibriVox feels overwhelming — it aggregates public domain audiobooks from LibriVox and other sources into a clean, browsable interface, and is a good entry point if LibriVox's raw site feels overwhelming. It also presents public-domain audiobooks and ebooks in a simpler catalog, letting you browse by Genres, Languages or Top 100, drawing heavily on Project Gutenberg texts and LibriVox recordings, with over 7,000 audiobooks advertised.

Internet Archive has the largest raw collection: its audio section is one of the largest free audio repositories online, including LibriVox recordings alongside digitized cassette tapes, radio dramatizations, and community uploads, with broad search and an enormous catalog.

Project Gutenberg also offers some audio: it's primarily an ebook site, so not every ebook has an audiobook — look for "Audio Book Index" on the title page, where available links can include MP3, Ogg Vorbis, Apple iTunes audiobook, and Speex files. Its current audio collection includes hundreds of titles read by people, plus an Open Audiobook Collection containing almost 5,000 computer-generated titles from 2023.

Current Bestsellers & New Releases (via library card)

Libby is the standout option for modern titles: Libby connects to your local public library card to give you free access to audiobooks, ebooks, and magazines, and in 2026 its catalog covers tens of thousands of titles including new releases — if you live near a public library system, it's the single most powerful free audiobook tool available. Note that OverDrive retired its original app in 2023, so today you'll use Libby (or Sora for schools) — sign in with a card from a participating library, browse that library's digital catalog, and borrow titles for a set lending period.

Similar library-based alternatives include Hoopla and BorrowBox, which require a participating library and support free borrowing of ebooks and eAudiobooks — in the mobile app, you borrow a title and choose "Listen Now," and the app downloads the audiobook for offline listening. Keep in mind loans commonly last three weeks, though the exact period varies, and access ends automatically when the loan expires.

Discovery/Aggregator Sites

Open Culture curates quality picks rather than just listing everything: it doesn't produce content itself but curates links to the best freely available audiobooks from various sources, with editorial curation selecting titles of cultural and literary significance and often providing context about why each work is worth listening to.

LearnOutLoud is strong for educational/nonfiction content, covering categories such as business, education, history, languages, literature, philosophy, science, technology, and travel, describing thousands of free audiobooks available for streaming or download.

A Quick Note on Torrents

Some lists mention torrent sites like AudioBook Bay or 1337x, but these typically host copyrighted commercial audiobooks without authorization — I'd steer clear since it's legally risky and often low quality (variable bitrates, missing tags, malware risk on less-curated sites).

Bottom line: For classics you can keep forever, start with LibriVox or Loyal Books. For current bestsellers and new releases, Libby (with your library card) is unmatched.

I'll search the web for the best free audiobook sites.

I found several promising sources. I'll open detailed guides to compare the top options.

The best free downloadable audiobooks come from three places: public-domain classics, educational projects, and public libraries:

1. Best for keeping MP3s forever - no card needed

LibriVox - biggest human-read classics library

Catalog has passed 20,000 audiobooks, searchable by title, author, genre or narrator.

You can listen on computers, phones, and tablets, streaming them or downloading them for later. Collection includes novels, history, biography, short stories, poetry, and more, all made by volunteers.

It is a community-driven platform where volunteers create the books.

Loyal Books - easier to browse than LibriVox

Loyal Books is a website that offers 7,000+ free audiobooks and ebooks in the public domain.

You can browse by author, title or genre and download in MP3, M4B, and EPUB. It covers classics by Jane Austen, Charles Dickens, and Mark Twain.

Loyal Books boasts over 7,000 free downloadable audiobooks and eBooks.

Project Gutenberg + TTS app - largest classics text library

Project Gutenberg is a non-profit archive of roughly 70,000 books whose copyright has lapsed.

Catalogue is ~70,000 titles — classic literature, philosophy, poetry, history. Some audiobooks are human-narrated and some computer-narrated.

Pair it with a free reader to turn any EPUB into audio.

Internet Archive - best for rare / out-of-print

archive.org hosts an enormous, freely browsable collection that includes audiobooks, including public-domain recordings, LibriVox mirrors, and out-of-print titles.

Its Audio Books & Poetry collection holds hundreds of thousands of titles, including many LibriVox recordings. Everything can be streamed or downloaded free.

Cost is Free, no account required for most items.

Lit2Go - best for school / short stories and poems

Created by the Florida Center for Instructional Technology at the University of South Florida.

The site provides over 1,000 titles, each of which can be downloaded in MP3 format, plus PDF texts and lesson plans.

It includes works by Shakespeare, Poe, Twain, Austen and others.

DigitalBook.io - best app-like experience

DigitalBook is a free platform for audiobooks and ebooks that doesn’t require a sign-up or subscription.

Its catalog covers thousands of audiobooks in more than 60 languages, across Young Adult, Romance, Mystery, Children’s, History, Fantasy, and Sci-Fi.

You can stream in browser or use iOS and Android apps to download for offline listening.

Open Culture / Learn Out Loud - best directories

Open Culture titles can be downloaded or streamed for free, with no limit on how many you can download.

Learn Out Loud has a dedicated free section, including courses and audiobooks, alongside paid titles.

2. Best for modern bestsellers - library card required, temporary loan

Libby by OverDrive

OverDrive is the service behind most public library digital lending, and its Libby app lets you borrow audiobooks and ebooks free with a library card.

This is the best free route to current bestsellers and new releases. Trade-off: limited copies, so popular titles often have waitlists.

Catalogue is tens of thousands per library, with professionally narrated commercial recordings.

Hoopla

Hoopla’s main advantage is that borrows are usually instant — no hold queue.

Cost is free with library card, subject to monthly checkout limit.

Quick pick:

• Want to own forever: start with LibriVox, Loyal Books, Gutenberg, Internet Archive
• Want new releases for $0: get Libby + Hoopla with a library card
• Want kids/classroom: use Lit2Go and Storynory - Storynory has classic authors like Andersen, Dickens and Brothers Grimm and allows download

When looking for free audiobooks, options generally fall into two categories: library services (which give you free offline access to modern bestsellers) and public domain archives (which offer completely free, permanent, DRM-free MP3 downloads of classic titles).

Here are the best sites and apps across both categories:

1. Best for Modern Bestsellers (Using a Library Card)

If you want current releases, popular fiction, and memoirs rather than just 19th-century classics, your local public library is the best legal option:

• Libby, by OverDrive
• Catalog: New releases, bestsellers, non-fiction, YA, and classics.
• How it works: Connect your public library card (often obtainable online for free). You can borrow audiobooks and download them within the Libby app for offline listening.
• Best for: The easiest, highest-quality access to modern commercial audiobooks.
• Hoopla Digital
• Catalog: Massive collection of commercial audiobooks, graphic novels, and music.
• How it works: Similar to Libby, but with no waiting lists or holds—if it’s in Hoopla's catalog, you can borrow and download it instantly (usually subject to a monthly borrow limit set by your library).
• Best for: Avoiding hold queues for popular titles.

2. Best for Direct DRM-Free MP3 Downloads (Public Domain)

These platforms provide free audio files (usually MP3 or M4B) that you can download directly to your computer or phone and keep forever.

• LibriVox
• Catalog: Tens of thousands of public domain classics (books published before 1928, like Jane Austen, Arthur Conan Doyle, Mary Shelley, etc.).
• How it works: All audiobooks are read by volunteer narrators from around the world. You can download entire books as ZIP archives, individual MP3s, or torrents.
• Best for: Classic literature completely free of DRM.
• Internet Archive
• Catalog: Millions of recordings, including public domain audiobooks, vintage radio dramas, and poetry.
• How it works: Houses the raw files of LibriVox alongside thousands of independent community uploads and historic recordings. Audiobooks are available in direct MP3 or VBR downloads.
• Best for: Finding obscure works, old-time radio shows, and rare historical audio.
• Open Culture
• Catalog: Around 1,000 carefully curated classic audiobooks, poetry collections, and non-fiction works.
• How it works: A curated directory linking to free downloads across iTunes, Spotify, YouTube, and direct MP3 links.
• Best for: A clean, curated list without having to dig through massive public domain databases.
• Lit2Go
• Catalog: Hundreds of classic short stories, poems, and novels designed by the University of South Florida.
• How it works: Each chapter can be downloaded directly as an individual MP3 file. It also provides the synchronized text transcript and reading-level metrics.
• Best for: Students, language learners, and short-story lovers.
• Digitalbook.io
• Catalog: Over 100,000 public domain titles, pulling from LibriVox and Project Gutenberg.
• How it works: A modern, visual search interface for LibriVox audiobooks with direct MP3 downloads, podcast feeds, and built-in web players.
• Best for: A modern browsing experience for public domain audio.

3. Special Programs & Limited-Time Freebies

• SYNC (by AudioFile Magazine)
• How it works: A seasonal program (typically running every summer) offering two free, complete audiobook downloads per week (usually young adult titles paired with a classic or related theme).
• Catch: Downloads use the Sora app, but once downloaded during the promotion window, they are yours to keep.
• Audible Free Selection
• How it works: Even without an active subscription, Audible periodically offers free promotional titles, classic audiobooks, and podcast series under their "Free Audiobooks" browse filter.

Tips for the Best Listening Experience:

• Audiobook Players for Direct MP3s: If you download raw MP3/M4B files from LibriVox or Internet Archive, standard music players often lose your place. Use a dedicated player like Smart AudioBook Player or Voice Audiobook Player (Android), or Bound / BookPlayer (iOS) to automatically remember your playback position and allow speed adjustments.

For reliable, legitimate access to digital books, these are good places to start:

• Project Gutenberg — Best for free, downloadable classics and other books that are public domain in the U.S. Its volunteer-prepared ebooks are available in several formats. (gutenberg.org)
• HathiTrust Digital Library — A strong research-library archive. Books marked “Full View” can be read by anyone; many in-copyright books are searchable but not fully readable. (cdlib.org)
• Internet Archive / Open Library — Useful for older and out-of-print books, with some titles available to borrow digitally. Availability and loan terms vary by book. (archivesupport.zendesk.com)
• Your public library’s ebook service — Often the best route for borrowing current, copyrighted books legally; check your library’s website or ask a librarian what service it uses.

Quick guide: classics → Project Gutenberg; research and digitized library collections → HathiTrust; older or hard-to-find titles → Internet Archive/Open Library; recent books → your library. Check the rights and access label on each item, since a catalog listing does not necessarily mean the full book is available to read.

I'll research the most reliable digital book archives for you.

I've gathered details on the major archives — now I'll check a few specialized collections to complete the list.

The most reliable sites are the non-profit, library-backed archives that offer legal public-domain or library-lending access — not shadow libraries:

1. Internet Archive

The heavyweight for historical, rare and out-of-print books.

It’s a non-profit that's been around since 1996, founded by Brewster Kahle ... over 40 million books and texts.

The Archive is one of the largest online preservation projects ever undertaken.

Best for: scanned historical books, magazines, rare publications. Use is free with account borrowing and waitlists.

2. Open Library

A cleaner catalog + borrowing layer on top of the Internet Archive.

An initiative of the Internet Archive, Open Library aims to have a web page for every book ever published.

How borrowing works:

The Internet Archive and participating libraries have selected digitized books from their collections that are available to be borrowed by one patron at a time from anywhere in the world for free.

These books are in BookReader, PDF and ePub formats (and Daisy for the print disabled).

Books are generally available for renewable 1-hour loans. Some books also offer a longer 14-day loan; for these books, if there are no copies available, users can join a waitlist.

Note: Open Library lends some modern books, though its lending program has lost court battles and its catalog shifts under the pressure.

Use Controlled Digital Lending: one digital loan per physical copy owned, so availability can be limited.

3. Project Gutenberg

Best for classics in clean e-book format.

Project Gutenberg is a library of over 60,000 free e-books on a variety of topics.

Project Gutenberg (gutenberg.org) is a volunteer-run digital library of nearly 79,000 free ebooks, most of which are in the public domain because their copyright has expired.

Project Gutenberg is a free digital library of nearly 79,000 public domain ebooks, founded by Michael Hart in 1971.

No borrowing needed — direct EPUB, Kindle, HTML and text download, DRM-free.

4. Standard Ebooks

Best typography for public-domain classics.

Standard E-Books: A collection of high quality, carefully formatted, accessible, open source, and free public domain ebooks.

Standard Ebooks starts from the same public domain texts and gives each one a full production pass: modernized spelling, consistent typography, proper metadata, and covers drawn from public domain fine art.

Its catalog passed 1,500 titles in August 2026.

Use this if you want Gutenberg texts but beautifully formatted.

5. HathiTrust Digital Library

Best for academic / research / out-of-print books.

HathiTrust is a not-for-profit large-scale collaborative repository that preserves and provides access to over 19 million digitized items, including millions of public domain books.

Currently digitized as of December 2025 over 19 million volumes from 60 academic and research libraries, including the ASU Library.

Full-text access and downloading is available for those items in the public domain

Volumes not available for download are still searchable.

If you are at a member university, you get the most access. Otherwise use it for full-view public-domain volumes + full-text search.

6. Google Books

Best index + preview.

Search the full text of over 15 million books. Books in the public domain are available to read online or download for free.

Use for discovery, then read full public-domain volumes or find a library copy for in-copyright books.

7. Digital Public Library of America – Open Bookshelf

Best library-curated open collection for modern devices.

Over 6,000 free open access titles are available through DPLA’s Open Bookshelf

Open Bookshelf is a digital library collection of popular books free to download, formatted for modern devices, and handpicked by a Curation Corps of librarians from across the US.

DPLA is a discovery tool, or union catalog, for public domain and openly licensed content held by the United States' archives, libraries, museums, and other cultural heritage institutions.

Quick choice:

• Classics to keep forever: Project Gutenberg / Standard Ebooks
• Rare, historical, scanned originals: Internet Archive / HathiTrust / Google Books
• Borrow modern books digitally: Open Library
• Academic preservation: HathiTrust

Copyright note: Free does not automatically mean public domain. Check the rights information for the specific title and edition before downloading, modifying, or redistributing it.

Reliable Archive Sites for Digital Books

The most trustworthy sources tend to be those run by libraries, universities, nonprofits, and established publishers. Here's a breakdown organized by what each is best for.

Major General-Purpose Repositories

These are the largest, most stable collections — effectively small libraries in their own right.

• Google Books — 10,000,000+ fully readable public-domain volumes, plus copyrighted books viewable as snippets. Use the Advanced Search to filter to full-text/public-domain results.
• HathiTrust Digital Library — Millions of titles from a partnership of academic and research institutions. Public-domain works are readable full-text; full-book downloads are limited to users at partner institutions (others get page-by-page).
• Internet Archive — 20,000,000+ freely readable volumes via its Ebooks and Texts collection, with page images and some transcriptions. Also home to Open Library, its borrowing initiative.
• Project Gutenberg — Over 70,000 items, mostly carefully proofread book transcriptions, all free and unrestricted.

Curated Indexes and Search Aids

Rather than hosting books themselves, these help you find them across many sites:

• The Online Books Page — Hosted by the University of Pennsylvania Libraries, this is one of the most respected directories, with sections for general collections, foreign-language works, and specialty archives (audiobooks, children's literature).
• Digital Public Library of America (DPLA) — 50+ million images, texts, videos, and sounds aggregated from U.S. institutions.
• Digital Book Index — Free and for-pay books (registration-based).

Scholarly and Open-Access Books

If you need academic monographs, these are the gold standard:

• Directory of Open Access Books (DOAB) — 89,000+ peer-reviewed open-access academic books from 800+ publishers; all data is freely available.
• OAPEN Library — 25,000+ open-access books in the humanities and social sciences.
• JSTOR Open Access eBooks — 5,000+ titles from various academic publishers.
• Project MUSE Open Access — 1,800+ books and 5 journals from university presses.
• National Academies Press — Nearly 10,000 free PDF downloads in sciences and social sciences.
• MIT Press Open and ANU Press — 100+ and 800+ open-access ebooks respectively.

Free Public Library Access (Current Bestsellers)

For in-copyright titles, your best bet is your local library, whose tax dollars pay for these services:

• OverDrive/Libby — The most widely used library ebook/audiobook service.
• Palace Bookshelf — Part of DPLA, 11,000+ free ebooks (classics, children's books, textbooks, foreign language) with no account required.

Well-Formatted Alternatives

If you want nicer typography than raw scans:

• Standard Ebooks — Attractively laid-out, Ereader-friendly editions of public-domain texts.
• Global Grey Ebooks and Faded Page — Public-domain literature formatted for e-readers.

A Few Practical Cautions

• Copyright varies by country. Project Gutenberg Canada, Faded Page, and Roy Glashan's Library host works in the public domain in their jurisdictions but possibly not yours.
• "Free to read" ≠ "free to download." HathiTrust and Internet Archive restrict full downloads for many titles.
• Stick with institutional sites. The most reliable archives are library-, university-, or nonprofit-run; they're less likely to disappear or serve malware than ad-supported aggregators.

For a broad starting point, The Online Books Page and the Library of Congress guide are both excellent launchpads.

The most reliable archive sites for digital books are generally the long-running, institution-backed, or non-profit collections: Internet Archive, Project Gutenberg, HathiTrust, Google Books, and the Online Books Page as an index to many trustworthy sources.³⁵¹⁹

• Internet Archive is a non-profit digital library with millions of free texts and books, including over 20,000,000 freely downloadable books and texts on its texts collection.¹⁴¹⁹
• Project Gutenberg is one of the oldest and most established sources for public-domain ebooks, with over 70,000 items, mostly transcriptions.³
• HathiTrust Digital Library is a major research-library-backed archive with 3,000,000+ freely readable titles and additional searchable titles.³
• Google Books is useful for discovery and access to full-text public-domain books, with page images of 10,000,000+ fully readable volumes and many more searchable copyrighted books.³
• The Online Books Page is not an archive itself, but it is a trusted directory of major free-text repositories and search aids.³

If you want the safest legal starting points, use Project Gutenberg for public-domain classics, HathiTrust for library-scanned books, and Internet Archive for broad archival coverage and borrowing options.³⁵¹⁹

A few caution points:

• Internet Archive is broad and valuable, but some items are available through lending rather than direct download, and its copyright practices have been described as controversial in some coverage.⁴⁵
• Sites that aggregate uploaded PDFs or promise current bestsellers can be much less reliable; one source explicitly warns that some such sites are “essentially pirate sites.”⁴

If you want, I can also rank these by best for public-domain books, best for academic books, or best for easy downloading.

Based on current information, here are the most reliable and legitimate archive sites for digital books, organized by type and purpose:

Public Domain Classics (100% Legal)

Project Gutenberg – The oldest and most established option. Founded in 1971, this is the oldest digital library in existence, offering over 78,000 titles from authors like Shakespeare, Mark Twain, and Jane Austen, with no registration needed—just pick a format (EPUB, Kindle, HTML) and start reading.

Standard Ebooks – Standard Ebooks takes public domain books and transforms them into professionally formatted ebooks, carefully edited and optimized for modern e-readers for a much better reading experience.

Large-Scale Library Projects (Mixed Legal Access)

Internet Archive – The Internet Archive houses the world's largest collection of free books, 35 million and counting, and is a go-to source for academic research and rare texts, including magazines, newspapers, and academic papers, with impressive scanning quality even for 200-year-old texts. It operates on a legitimate basis as a U.S. 501(c)(3) nonprofit digital library, useful for historical material, public-domain texts, and selected borrowable digitized books.

Open Library (an Internet Archive project) – Open Library combines book-catalog records with links to readable or borrowable editions, and eligible users can borrow up to ten books at a time, with one-hour browser loans or 14-day loans for eligible titles.

HathiTrust – Listed in the Library of Congress ebook guide, full text and download access can depend on a work's rights status and your eligibility, making it especially useful for checking digitized research and library materials.

Academic & Open-Access Resources

• JSTOR Open Access – JSTOR is famous for its subscription archive, but it also runs a fully authorized Open Access program exposing a curated subset of humanities and social-sciences scholarship, with an OA subset of roughly 100,000+ open-access chapters, articles, and reports as of September 2026.
• OpenStax and the Open Textbook Library – The Open Textbook Library is a University of Minnesota project curating peer-reviewed open-access textbooks, with every title peer-reviewed by faculty before listing and the collection covering more than 1,000 titles.
• PubMed Central, DOAJ, arXiv – for academic papers and open-access journals.

Library Borrowing Apps (Legal, Requires Library Card)

Libby/OverDrive and Hoopla – For copyrighted books, your local library's digital lending through Libby, OverDrive, or Hoopla is the legal free option, and most libraries let you send a borrowed book straight to your Kindle.

A Note on "Shadow Libraries"

Sites like Anna's Archive, Z-Library, and LibGen are widely known for having massive catalogs, but they carry significant legal risk. In March 2026, major publishers including Penguin Random House, HarperCollins, and Simon & Schuster filed suit against Anna's Archive for mass copyright infringement, right after a separate $13 trillion claim from Spotify and three major record labels. Additionally, Anna's Archive's main .org domain was suspended in January 2026 following the OCLC lawsuit, with ISP-level blocks now active in the UK, Germany, the Netherlands, Belgium, and Italy. As one analysis puts it, Internet Archive is a nonprofit library that digitizes, hosts, and lends materials under stated rights rules—the names look similar, but the legal footing does not.

Bottom line: For guaranteed legality and long-term reliability, stick with Project Gutenberg, Standard Ebooks, Internet Archive/Open Library, HathiTrust, and library-card-based apps like Libby. These are run by nonprofits, universities, or government-linked institutions and aren't subject to the domain seizures and lawsuits currently affecting shadow libraries.

When searching for reliable, legal, and well-maintained digital book archives, the best platforms depend on whether you need public-domain classics, scholarly/historical research texts, or curated modern editions.

Here are the most reliable and authoritative digital book archives available:

1. General & Public Domain Collections

• Project Gutenberg
• Best for: Classic literature and verified public-domain books.
• Why it’s reliable: Founded in 1971, it is the oldest digital library in the world. It hosts over 70,000 titles that have been meticulously proofread by volunteers.
• Formats: EPUB, Kindle (.mobi), plain text, and HTML.

• Standard Ebooks
• Best for: Beautifully typeset, modern digital editions of public-domain works.
• Why it’s reliable: While Project Gutenberg provides the raw text, Standard Ebooks takes those public-domain books and applies professional typography, modern formatting, proofreading, and clean metadata.
• Formats: Highly optimized EPUB, Kindle/Kepub, and PDF.

• The Internet Archive & Open Library
• Best for: Rare prints, out-of-print books, scans of original historical editions, and modern digitized books.
• Why it’s reliable: A non-profit digital library holding millions of digitized books and facsimile scans. (Note: While access to some in-copyright 20th-century titles has been modified due to copyright litigation, its public-domain catalog and historical scans remain unmatched in breadth).
• Formats: Read online, PDF, Daisy (for accessibility), and EPUB.

2. Scholarly & Academic Digital Libraries

• HathiTrust Digital Library
• Best for: Academic research, 19th/20th-century university publications, and archival literature.
• Why it’s reliable: A partnership of major research institutions and university libraries worldwide. It preserves over 17 million digitized items. Millions of public-domain titles are open for full-text view and download, and its full-text search capability across the entire collection is among the best available.
• Formats: Online reader, page-by-page or full PDF (full downloads often require affiliation with a member institution).

• Digital Public Library of America (DPLA)
• Best for: American history, regional culture, photographs, and digitized manuscripts.
• Why it’s reliable: A unified portal aggregating digitized collections from thousands of U.S. libraries, universities, and museums (including the Smithsonian and the New York Public Library).
• Formats: Linked digital scans, online viewers, and downloadable PDFs.

3. National & International Cultural Heritage Repositories

• Europeana
• Best for: European literature, historical documents, and art history.
• Why it’s reliable: The European Union’s digital platform for cultural heritage, aggregating collections from thousands of European libraries, archives, and galleries.
• Formats: High-resolution scans, PDFs, and transcripts.

• Gallica (Bibliothèque nationale de France)
• Best for: Francophone literature, medieval manuscripts, historical periodicals, and maps.
• Why it’s reliable: Gallica is the official digital library of the National Library of France, hosting over 10 million documents. Even for non-French speakers, its digitized early prints and illuminated manuscripts are top-tier.
• Formats: High-resolution image viewers, PDF, and EPUB.

• Library of Congress Digital Collections
• Best for: Primary sources, early American prints, rare books, and historical legal texts.
• Why it’s reliable: Maintained by the largest library in the world, with institutional permanence and expert metadata curation.
• Formats: PDF, high-res TIFF/JPEG, and dedicated web readers.

4. Specialized & Field-Specific Repositories

• Biodiversity Heritage Library (BHL): The premier open archive for historical scientific literature, botany, zoology, and botanical illustrations.
• Online Books Page (University of Pennsylvania): A curated, regularly updated directory indexing over 3 million freely accessible, legally cleared books across the web.

Summary Recommendation

• For reading novels comfortably on an e-reader: Use Standard Ebooks or Project Gutenberg.
• For facsimile scans of rare or out-of-print books: Use Internet Archive.
• For formal academic or historical research: Use HathiTrust or national library portals like the Library of Congress and Gallica.

The most reliable options are established nonprofit and institutional digital libraries that focus on public-domain works, authorized open access, or long-term preservation—not unauthorized copies of in-copyright books.

Core archives

• Internet Archive (archive.org) and its Open Library (openlibrary.org): A long-running nonprofit with millions of scanned books, periodicals, and documents. Public-domain titles can usually be downloaded freely in multiple formats. It is one of the broadest archival collections for older, rare, and out-of-print material. Note that a 2024 U.S. appeals court ruling found its controlled digital lending of many in-copyright books was not fair use; those lending copies were largely removed, though public-domain and otherwise authorized materials remain available.

• Project Gutenberg (gutenberg.org): One of the oldest and most trusted sources. It offers tens of thousands of public-domain ebooks (commonly cited in the 70,000–79,000 range in recent guides), mostly older literature and nonfiction. Files are typically DRM-free in EPUB, Kindle-compatible, HTML, and plain-text formats, and no account is required. Volunteer proofreading keeps quality high for reading.

• HathiTrust Digital Library (hathitrust.org): A partnership of academic and research libraries holding 19+ million digitized volumes. It emphasizes long-term preservation (redundant storage, format standards, integrity checks). Public-domain works are generally readable in full; many others are searchable only. Access rules can vary by copyright status and user location or institutional affiliation. It is especially strong for scholarly, historical, and government documents.

• Standard Ebooks (standardebooks.org): A smaller, volunteer project that produces carefully proofread, well-typeset editions of public-domain classics (often drawn from Gutenberg texts). Quality and formatting are excellent when a title is available; downloads are DRM-free.

Other solid sources

• Google Books: Useful for discovery and full-view/download of many public-domain scans. Not every title is fully available.
• Wikisource: Collaborative, often carefully transcribed public-domain texts in multiple languages, with export options.
• National and cultural heritage collections: Library of Congress digital collections, Digital Public Library of America (DPLA), and Europeana aggregate or host large bodies of digitized books and related materials from libraries and archives.
• Library lending services (Libby/OverDrive, Hoopla, etc.): Not pure archives, but the most reliable legal route for recent, in-copyright ebooks and audiobooks via a public library card. Loans are temporary and depend on your library’s licenses.

Practical notes

Public-domain status depends on publication date, author death date, and your country’s laws (U.S. rules are often referenced online, but they are not universal). Sites above generally label rights or restrict downloads accordingly. For current bestsellers or textbooks, authorized library loans or purchases are the dependable options; free permanent downloads of those titles on unofficial sites are usually not legal.

Start with Project Gutenberg or Standard Ebooks for clean classics you can keep, Internet Archive or HathiTrust for scans and research material, and your local library’s app for anything still under copyright.

The largest free ebook collections depend on whether you mean books you can download outright or titles you can borrow:

• Google Books — Google says it has more than 10 million free books available to read and download. Many are public-domain works or titles made free by their rights holders. (books.google.com)
• Internet Archive / Open Library — A very large digital collection. Open Library says nearly 3 million books are available digitally, though access varies: some can be downloaded, while others are borrow-only. (openlibrary.org)
• Project Gutenberg — 79,000+ free ebooks, chiefly older literature that’s in the public domain in the U.S.; downloads include EPUB and Kindle formats. (gutenberg.org)

Quick picks: For the biggest stated number, try Google Books. For a broad mix of scanned books and borrowable titles, try Internet Archive/Open Library. For easy, dependable downloads of classics, start with Project Gutenberg.

“Free” doesn’t always mean the same thing: some titles are unrestricted downloads, while others are free to read or borrow only. Copyright status can also differ by country.

When looking for legal, safe, and genuinely free ebook downloads, the best platforms generally fall into three categories: massive public-domain archives, public library networks, and independent/promotional ebook stores.

Here are the platforms with the largest selections:

1. Massive Public Domain & Open-Access Archives (DRM-Free)

These platforms offer permanent downloads—usually in EPUB, PDF, or Kindle formats—with no DRM and no borrowing expiration dates.

• Internet Archive (Open Library / archive.org):
• Catalog Size: Over 20+ million texts and books.
• What you get: It is arguably the single largest digital repository of scanned books in the world. Anything published before the mid-1920s is generally available as an immediate, free, permanent download (EPUB, Kindle, PDF). For out-of-print 20th-century books, Open Library also has a digital lending program.
• Project Gutenberg:
• Catalog Size: Over 70,000+ titles.
• What you get: The gold standard for classic literature. Volunteers manually proofread and digitize public-domain classics (Austen, Shakespeare, Dickens, philosophy, history). Downloads are completely free, clean, and available in EPUB, Kindle, and plain text.
• Google Books:
• Catalog Size: Millions of public-domain titles.
• What you get: Google has digitized tens of millions of library volumes. By filtering your search by "Free Google eBooks", you can download millions of historical texts, rare books, and public-domain works directly as PDF or EPUB.
• HathiTrust Digital Library:
• Catalog Size: Over 17+ million total volumes (millions of which are in the public domain).
• What you get: A partnership of major academic and research institutions. Excellent for historical research, academic literature, and pre-1928 books that can be downloaded as full PDFs.

2. Modern Bestsellers & New Releases (Digital Library Loans)

If you want modern bestsellers, non-fiction, and popular fiction rather than 100-year-old classics, public library apps offer the largest collections. While these are technically loans, they allow you to download books to read offline.

• Libby (by OverDrive):
• What you get: Connects directly to your local public library card. Libraries purchase digital catalogs that often contain hundreds of thousands of modern bestsellers. You can download them to the Libby app or send them directly to your Kindle for offline reading.
• Hoopla:
• What you get: Similar to Libby, partnering with public libraries. Unlike Libby, there are usually no waitlists or hold queues—if your library offers Hoopla, you can instantly download from a catalog of hundreds of thousands of ebooks, audiobooks, and comics.

3. Indie, Contemporary & Curated Ebook Stores

• Smashwords (Draft2Digital):
• Catalog Size: Over 80,000+ free ebooks.
• What you get: The largest platform for self-published indie authors. Filtering by the "Free" price tier yields massive collections of romance, fantasy, sci-fi, and thrillers. Downloads are typically 100% DRM-free.
• ManyBooks:
• Catalog Size: ~50,000 titles.
• What you get: A hybrid library featuring clean interfaces for public-domain classics alongside self-published works and promotional freebies from contemporary authors.
• Standard Ebooks:
• Catalog Size: Around a few thousand titles (smaller, but exceptionally high quality).
• What you get: Standard Ebooks takes public-domain works from Project Gutenberg and professionally typesets, edits, and formats them to modern digital publishing standards with high-res cover art. Ideal if you care about reading aesthetics on e-readers.
• Amazon Kindle / Kobo / Barnes & Noble Free Sections:
• Each major commercial store maintains a rotating selection of thousands of permanently free or promotionally free titles (often the first book in an author's series or public domain re-issues).

Summary Recommendation

• For the sheer quantity of historical and out-of-copyright books: Internet Archive and Project Gutenberg.
• For current bestsellers and modern releases: Libby.
• For contemporary fiction and indie writers: Smashwords.

The largest selections of free ebook downloads in your results are Project Gutenberg and Open Library / Internet Archive, with Project Gutenberg strongest for public-domain classics and Open Library/Internet Archive strongest for borrowable modern titles.¹¹³¹⁴

• Project Gutenberg: about 79,752 free eBooks and no registration required.¹
• Internet Archive / Open Library: the Internet Archive offers more than 20 million freely downloadable books and texts, while Open Library is described as having millions of books available to borrow or download.¹³¹¹
• Free-eBooks.net: tens of thousands of free ebooks across 95+ genres.⁴⁸
• ManyBooks: 50,000+ free eBooks.²
• Freebooksy: not a library, but a daily deal service that surfaces hundreds of free ebook offers each week.³

If you want the biggest raw catalog, the best answer is Internet Archive/Open Library; if you want the largest no-signup download library of classics, it’s Project Gutenberg.¹¹³¹⁴

Short answer: Google Books claims the biggest pool by far, but "largest selection of free downloads" depends on whether you mean public-domain files you keep, borrowable modern titles, or indie giveaways. Here's how the major sites stack up.

By raw catalog size

The practical takeaway

• For sheer volume: Google Books is the outlier at 10M+, since it includes scanned public-domain works and government documents alongside openly licensed titles (google.com).
• For frictionless downloading of classics: Project Gutenberg is the standard — nearly 80,000 titles, no fees, no registration, no apps, with ePub/Kindle/HTML/plain-text formats (gutenberg.org). Standard Ebooks takes a subset of those texts and rebuilds them with professional typography (free-ebooks.net).
• For modern, in-copyright books: you can't download them permanently for free legally — but Open Library's 3M+ lending catalog is the largest legal option, with waitlists on popular titles (free-ebooks.net).
• For contemporary indie fiction: Smashwords' ~100,000 free DRM-free titles and ManyBooks' 50,000+ (which mixes classics with time-limited promos) are the deepest wells (free-ebooks.net).
• For audiobooks: LibriVox, with 21,000+ volunteer-read public-domain recordings in 49 languages (free-ebooks.net).

One caveat worth flagging: Open Library and Google Books operate under different legal models than Gutenberg or Smashwords, and "free" promotional titles on sites like ManyBooks rotate — a book that's free today may be paid tomorrow (free-ebooks.net).

I'll search for the platforms with the largest free ebook catalogs.

I've identified the top contenders; now I'll gather authoritative details to compile the ranking.

Largest free-ebook platforms by selection

1. Internet Archive / Open Library — by far the largest

• Internet Archive Ebooks and Texts: 20,000,000+ freely readable volumes; page images and some transcriptions
• Open Library, described as a project run by the Internet Archive, is one of the largest digital book collections on the web, offering access to more than 20 million records
• Same collection is described as offering millions of books available to borrow or download in formats including PDF and EPUB.

Distinction: much is borrow / controlled-lending or browser reading, not unlimited PDF download. For fully downloadable public-domain books, the next services are simpler.

2. Google Books — 10 million+ free readable volumes

• Listed as page images of 10,000,000+ fully readable volumes, plus many more copyrighted books available via excerpts and snippets

Use Advanced Book Search to filter to free / full-view titles.

3. HathiTrust Digital Library

• 3,000,000+ freely readable titles, and additional search-only titles, from Google and elsewhere

Largely academic and library scans.

4. Project Gutenberg — largest dedicated free-download classics library

• Listed alongside the above as over 70,000 items, mostly book transcriptions
• Self-described as a library of over 75,000 free eBooks with focus on older works for which U.S. copyright has expired.
• Also described as the oldest digital library in the world, founded in 1971 by Michael Hart. It offers more than 70,000 free eBooks — primarily public-domain works whose copyright has expired — available to read online or download in PDF, EPUB, and Kindle formats, with no fees or registration required.

Best if you want unlimited, no-account EPUB / Kindle / TXT downloads.

5. ManyBooks — 50,000+

• ManyBooks hosts a catalog of over 50,000 free eBooks spanning genres including romance, mystery, science fiction, historical fiction, and more.
• Downloads offered in multiple formats — PDF, EPUB, MOBI, and others

Mix of public-domain, indie and promotional titles.

6. Smashwords — large catalog, smaller free subset

• There are almost 200,000 titles in the catalog.
• Currently there are almost 23,000 free ebooks on Smashwords.

Focused on independent / self-published authors.

Quick takeaway

• Absolute largest selection: Internet Archive + Open Library — 20M+ records / volumes.
• Largest free full-view scanned collection after that: Google Books — 10M+ volumes.
• Largest easy direct-download public-domain collection: Project Gutenberg — 70,000-79,000 titles.
• Largest curated indie / mixed free catalogs: ManyBooks — 50,000+; Smashwords — ~23,000-25,000 free.

Based on size of collection, the platforms with the largest selection of free ebook downloads are:

1. Internet Archive / Open Library This is widely cited as the biggest. The largest legal free eBook library in the world is the Internet Archive (which runs the Open Library project), holding millions of digitized books, movies, and audio files. More specifically, the Archive hosts a collection of over 20 million freely downloadable eBooks and texts from a multitude of libraries and cultural heritage institutions from around the globe, with 1000 books being scanned daily in its 33 scanning centers. A related source notes Open Library offers access to more than 20 million records with millions of books available to borrow or download in formats including PDF and EPUB.

2. Google Books Google's catalog is enormous: Google Books also offers access to a wide range of free ebooks (up to 10 million).

3. Smashwords A huge hub for free indie titles: Smashwords is the world's largest distributor of indie ebooks, making it fast, free and easy for any author or publisher, anywhere in the world, to publish and distribute ebooks to the major retailers and thousands of libraries. Of its catalog, a whopping 86,000+ of those books are available for free.

4. Project Gutenberg The oldest and most famous free library for public-domain classics: Project Gutenberg is home to over 75,000 public domain titles that are free to download. It's known for being the oldest digital library, though the majority of the books on the website are old, for which the copyright has expired.

5. ManyBooks ManyBooks is a digital library with over 50,000 free eBooks, that you can choose to read online or download by creating an account. It has since grown into a platform that allows authors to upload their books and make them available to the community, either for free or for a reasonable price.

6. Free-eBooks.net The Free eBooks website provides users with access to more than 100,000 electronic volumes available at no cost, though note that every month, you can download only five eBooks for free — to access more, you will have to purchase a VIP account.

Summary

• Biggest overall by raw volume: Internet Archive/Open Library (20M+) and Google Books (up to 10M) dwarf everything else, though much of this is scanned/archival material rather than curated reading copies.
• Biggest dedicated "free download" library for public-domain reading: Project Gutenberg (~75,000+ titles) is the classic go-to, prized for its clean, no-signup downloads.
• *Biggest for free indie/contemporary fiction*: Smashwords (86,000+ free titles) and ManyBooks (50,000+) lead here, since authors self-publish directly.

If you want a well-rounded personal library, a common strategy is combining Project Gutenberg or Standard Ebooks (for quality public-domain classics) with Open Library/Internet Archive (for sheer scale and modern borrowing) and Smashwords or ManyBooks (for free contemporary indie fiction).

The platforms with the largest selections of free ebook downloads are mostly large digital libraries of public-domain and rights-cleared works. Sheer volume and quality differ a lot.

Largest by volume

• Internet Archive (archive.org): The biggest overall. Its texts collection has tens of millions of items (over 50 million results in the texts area), and the site states it offers over 20 million freely downloadable books and texts. Public-domain works can usually be downloaded in formats such as PDF and EPUB. It also has a separate collection of modern ebooks available for short-term borrowing with a free account.
• Google Books: Officially offers more than 10 million free books that can be read and, in many cases, downloaded (mainly as PDFs). These are public-domain works or titles made fully available by rights holders. Use advanced search and filter for full view to find downloadable ones.
• HathiTrust: A large academic digital library with millions of public-domain volumes (historically on the order of 6–7+ million fully viewable public-domain items out of a much larger total collection). Full downloads are available for many public-domain works, though access rules can vary by location and institutional affiliation.

Strong mid-size options for permanent free downloads

• Project Gutenberg: Roughly 75,000–80,000 carefully proofread, DRM-free public-domain ebooks (mostly classics and older works). Available in EPUB, Kindle, HTML, and plain text with no account required. Smaller than the scan-based libraries above, but generally higher editorial quality and easier to use on e-readers.
• Smashwords (now part of Draft2Digital’s storefront): On the order of 90,000–100,000 free titles at any time, mostly indie and self-published books that authors have priced at zero. DRM-free EPUBs; good for modern genre fiction that public-domain libraries do not have.

Other notable sources

• Open Library (run by the Internet Archive): Millions of titles available to borrow (not permanent free downloads for most in-copyright books).
• ManyBooks: Tens of thousands of free titles (often drawn from public-domain sources plus some indie works), with a more curated browsing experience.
• Wikisource: Millions of free text units across languages (English alone exceeds a million). Many can be exported, but the collection mixes full books with shorter documents, chapters, and other texts.
• Library apps (Libby/OverDrive, Hoopla, etc.): Very large catalogs of current books, but these are temporary loans that require a library card and are not permanent downloads.

Practical note: Internet Archive and Google Books lead on raw numbers of free downloads. Project Gutenberg is usually the best starting point if you want clean, ready-to-read classics with no signup. Availability of specific titles can depend on copyright law in your country.