The Best Websites for Free College Textbooks: A Comprehensive Guide

The best websites for free college textbooks are OpenStax and LibreTexts for peer-reviewed, openly licensed course texts, the Open Textbook Library for finding open books across publishers, and Open Library and the Internet Archive for borrowing in-copyright titles at no cost. Project Gutenberg covers public-domain classics, and MIT OpenCourseWare fills in lecture notes and problem sets when no open textbook exists. Every site below was re-checked on October 30, 2026 and is live and free to use.

The best free textbook websites, ranked

1. OpenStax - best for standard intro courses (biology, chemistry, physics, calculus, psychology, economics). Peer-reviewed, openly licensed, free PDF and web versions.
2. LibreTexts - best for STEM depth and customizable texts. Subject libraries in biology, chemistry, math, physics, engineering, statistics, social sciences, humanities, and more.
3. Open Textbook Library - best for discovering open textbooks from many publishers, with faculty reviews.
4. Open Library - best for borrowing in-copyright textbooks free through Controlled Digital Lending.
5. Internet Archive - best for older editions, out-of-print books, and scanned course materials.
6. Project Gutenberg - best for public-domain literature, history, and philosophy reading lists.
7. MIT OpenCourseWare - best for lecture notes, problem sets, and exams that stand in for a textbook.
8. Milne Open Textbooks - best for SUNY-authored, peer-reviewed open textbooks.
9. MERLOT - best for searching a broad catalog of open learning materials beyond books.
10. Saylor University (formerly Saylor Academy) - best for full tuition-free, self-paced courses built around open readings.

What changed since the last version of this guide:

• Saylor Academy now calls itself Saylor University. Its course site still describes its courses as tuition-free and self-paced, so it stays on the list under the new name.
• Bookboon stays off the list. Its site now leads with video-led professional development content for businesses rather than free student textbooks.
• Open Library lends fewer in-print books than it used to. See the Open Library section below for why.

Site-by-site details

OpenStax

OpenStax, based at Rice University, publishes complete college textbooks that are peer-reviewed and licensed for free use. Its catalog is strongest for high-enrollment introductory courses: the sciences, math through calculus, business, economics, psychology, sociology, and US history. Every book is free to read online and as a PDF, though OpenStax's student guide marks some titles as login-to-unlock for the PDF. Licenses are Creative Commons but vary by title, so check the book page before you reuse or adapt one. If your syllabus lists a commercial intro textbook, OpenStax often has a book that covers the same topics.

LibreTexts

LibreTexts is a faculty-driven platform organized into subject libraries; its homepage lists 17 subject libraries and more than 2,000 textbooks. Unlike a fixed PDF, its books are modular web pages that instructors remix, so you will often find several versions of the same course text. It is especially deep in chemistry, biology, mathematics, physics, and statistics, and it pairs many texts with homework sets through its ADAPT system. Content can be read online or exported as PDF.

Open Textbook Library

Supported by the Open Education Network, the Open Textbook Library is a catalog rather than a publisher, and its homepage listed 1,909 open textbooks on October 30, 2026. It indexes open textbooks from OpenStax, university presses, and independent authors, and each entry is licensed so you can download, edit, and distribute it at no cost. The most useful feature is faculty reviews, which tell you whether a book actually works for a course before you commit to it.

Open Library and the Internet Archive

Open Library is the book-lending front end of the Internet Archive. It lends scanned, in-copyright books free through Controlled Digital Lending: you create a free account, borrow a title for a set period, and read it in the browser. Availability is one reader per copy, so popular textbooks can have a wait. Older editions of major textbooks are often available, and for many courses they are close enough to study from; ask your instructor whether a previous edition is acceptable.

One limit to know: after the publishers' lawsuit Hachette v. Internet Archive, which the Internet Archive lost on appeal in September 2024 and chose not to take further, the Archive said that 500,000 books had been removed from its library's lending. Current editions from large commercial publishers are therefore less likely to be borrowable than older or out-of-print titles.

The Internet Archive's texts collection also holds fully downloadable public-domain books and scanned university course materials. It is the first place to look for an out-of-print textbook your professor still assigns.

Project Gutenberg

Project Gutenberg hosts tens of thousands of public-domain ebooks (its homepage counted 79,695 free ebooks on October 30, 2026) in EPUB, Kindle, HTML, and plain-text formats. It will not have a modern organic chemistry text, but for literature surveys, philosophy, classics, and history primary sources it often covers the entire reading list.

MIT OpenCourseWare

MIT OCW is not a textbook library, but it publishes free course materials, including lecture notes, problem sets, and exams, from more than 2,500 MIT courses with no registration. When no open textbook exists for a course, a complete set of OCW lecture notes is often the next best thing, and many courses also post solutions you can check yourself against.

Milne Open Textbooks, MERLOT, and Saylor University

Milne Open Textbooks, from SUNY Geneseo, is a smaller catalog of peer-reviewed open textbooks authored by SUNY faculty, all under Creative Commons licenses. MERLOT is a long-running searchable index of open learning materials, including textbooks, simulations, and lesson modules, with peer-review ratings attached. Saylor University, the new name for Saylor Academy, offers complete tuition-free, self-paced courses that bundle open readings with quizzes and final exams, which is a good fit when you want structure rather than a standalone book.

Quick comparison

Site	Best for	Format	Account needed?
OpenStax	Intro courses	Web, PDF	No
LibreTexts	STEM depth, remixable texts	Web, PDF	No
Open Textbook Library	Finding open books with reviews	Links to PDF/web	No
Open Library	Borrowing in-copyright titles	In-browser lending	Yes (free)
Internet Archive	Older editions, out-of-print	Download or lend	For lending
Project Gutenberg	Public-domain reading lists	EPUB, Kindle, HTML, text	No
MIT OpenCourseWare	Lecture notes and problem sets	Web, PDF	No
Milne Open Textbooks	SUNY peer-reviewed texts	PDF, web	No
MERLOT	Broad OER search	Links	No
Saylor University	Free structured courses	Web	Yes (free)

How to find the specific book you need

1. Search the Open Textbook Library first. Because it indexes multiple publishers, one search covers OpenStax, university-press titles, and independent authors.
2. Check Open Library for the assigned edition. Search by ISBN or title; if the current edition is checked out or not lendable, look for an earlier edition and ask your instructor whether it is acceptable.
3. Ask your professor whether an open alternative is acceptable. Many instructors will accept an OpenStax or LibreTexts equivalent if you map chapters to the syllabus yourself.
4. Use your campus library's reserve desk. Most libraries keep assigned textbooks on short-term reserve, and many have affordable-textbook programs that point to the same open sources listed here.
5. Verify the license before sharing. Open textbooks are licensed for redistribution; books borrowed from Open Library are not. Respect the difference.

Pros and cons of free textbooks

Pros: zero cost, instant access from any device, permanent copies of openly licensed books, and the ability to annotate a PDF freely. Open textbooks are also updated without forcing a new paid edition.

Cons: coverage is uneven outside introductory courses, some niche or advanced topics have no open equivalent, and Controlled Digital Lending titles can have waitlists and cannot be downloaded. Quality varies more than with commercial publishers, which is why faculty reviews on the Open Textbook Library and MERLOT matter.

Turning a free textbook into study material

Downloading the book is the easy part. Because nearly every site above gives you a PDF or web text, you can hand a chapter to an AI study tool and skip the blank-page stage.

Scholarly is one option. Paste a chapter's text into the textbook chapter converter, which needs no account, to make flashcards, a summary, a practice quiz, or notes from it. Or upload the chapter to PDF to flashcards for a deck you can keep studying in your account. The output follows the open textbook's terminology rather than a generic version of the topic. The catch on uploads: a free account gets one AI creation and one upload for life, with an 8 MB file limit and PDFs read up to the first 32 pages. That covers one output from one chapter, not a whole book, and more needs a paid plan.

Frequently asked questions

What is the best website for free college textbooks?

For most introductory courses, start with OpenStax, which publishes free, peer-reviewed, openly licensed textbooks you can read online or download as PDFs. Use the Open Textbook Library to search across many open publishers at once, and Open Library to borrow an in-copyright title.

Are these sites legal?

Yes. OpenStax, LibreTexts, the Open Textbook Library, Milne, MERLOT, and Saylor University distribute openly licensed or free-to-use material. Project Gutenberg's ebooks are public domain in the United States, and the Internet Archive's freely downloadable texts are largely public-domain or openly licensed. Open Library lends in-copyright books under Controlled Digital Lending, which limits each scanned copy to one reader at a time.

Can I get the exact commercial textbook my class assigned for free?

Usually not the current edition as a download. Your best legal options are borrowing it through Open Library, checking your campus library's reserves, or using an open equivalent that covers the same topics.

Is Open Library really free?

Yes. Borrowing needs a free account and costs nothing, and you read borrowed books in the browser. Each scanned copy goes to one reader at a time, so popular titles can have a waitlist, and many current commercial editions are no longer available to borrow.

Is Bookboon still free for students?

We no longer list it. Bookboon's site now leads with video-led professional development content for businesses rather than free student textbooks, so check its current terms before relying on it.

Conclusion

Free college textbooks are no longer a workaround; for many introductory courses, OpenStax or LibreTexts has a peer-reviewed book that covers the syllabus, and Open Library fills the gap for in-copyright titles. Start with the Open Textbook Library to search across publishers, borrow what is not open, and then turn the PDF into flashcards, notes, or a video so the free book actually gets studied.