Acknowledgements

Credits

Open Free Books uses the open source libraries below (in alphabetical order—we try!).

Textbook authors and maintainers are listed on the homepage. View contributors.

Special thanks to our GitHub Sponsors for helping keep this project free and open. Sponsor Open Free Books.

This project

Third party acknowledgements

Open Free Books uses the open source libraries below (in alphabetical order):

Bun

Version 1.3.10

MIT

Copyright (c) Oven-sh

Sass

Version 1.89.x

MIT

Copyright (c) Google Inc. and contributors

Solid.js

Version 1.9.13

MIT

Copyright (c) 2016-2025 Ryan Carniato

Vite

Version 6.4.2

MIT

Copyright (c) 2019-present VoidZero Inc. and Vite contributors

Zola

Version 0.22.1

MIT

Copyright (c) 2017-present Vincent Prouillet and contributors

Hosting & deploy

Cloudflare

Static site hosting, CDN, and deploy (Workers & Wrangler)

Support

GitHub Sponsors

Supporters who help keep Open Free Books free and open for learners everywhere.

Thank you to all sponsors