head to head · open source
ebook2audiobook vs calibre-web
ebook2audiobook has 20,483 GitHub stars, 1,746 forks, 4 open issues and last shipped 28 days ago. calibre-web has 18,524 stars, 1,899 forks, 409 open issues and last shipped 24 days ago. ebook2audiobook leads on adoption by 11% (20,483 vs 18,524 stars). ebook2audiobook is written in Python under Apache-2.0; calibre-web is written in Fluent under GPL-3.0. ebook2audiobook has attracted 9% as many forks as stars, calibre-web 10%. calibre-web was the more recently maintained of the two, and both are self-hostable with no licence fee. The two share 1 topic tag (epub), so they are genuine substitutes rather than adjacent tools.
Two open source projects, one decision. Both are free and self-hostable — the differences are community size, license terms, language stack and release pace.
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Side by side
| ebook2audiobook | calibre-web | |
|---|---|---|
| GitHub stars | ★ 20K | ★ 19K |
| License | Apache-2.0 | GPL-3.0 |
| Written in | Python | Fluent |
| Last push | 2026-10-06 | 2026-10-10 |
| Forks | ⑂ 1.7K | ⑂ 1.9K |
| Self-hosting | Yes | Yes |
| Data ownership | Your server | Your server |
pick ebook2audiobook if
- You weight community size — 20K stars and counting
- You want the Apache-2.0 license terms
- Your stack matches Python
- You value the larger contributor base for long-term maintenance
pick calibre-web if
- You want the calibre-web feature set and don't need the biggest community
- You prefer the GPL-3.0 license terms
- Your stack matches Fluent
- You evaluated both and calibre-web fits your workflow better
About ebook2audiobook
📚 ebook2audiobook (E2A) CPU/GPU Converter from E Book to audiobook with chapters and metadata using advanced TTS engines and much more. Supports voice cloning and 1158 languages! [!IMPORTANT] This tool is intended for use with non DRM, legally acquired eBooks only. The authors are not responsible for any misuse of this software or any resulting legal consequences. Use this tool responsibly and in accordance with all applicable laws. Thanks to support ebook2audiobook developers! Run locally Run Remotely GUI Interface Click to see images of Web GUI Demos New Default Voice Demo More Demos ASMR Voice Rainy Day…
read the full ebook2audiobook overview →
About calibre-web
Calibre Web Calibre Web is a web app that offers a clean and intuitive interface for browsing, reading, and downloading eBooks using a valid Calibre database. Table of Contents (click to expand) 1. About 2. Features 3. Installation Installation via pip (recommended) Quick start Requirements 4. Docker Images 5. Troubleshooting 6. Contributor Recognition 7. Contact 8. Contributing to Calibre Web This software is a fork of library and licensed under the GPL v3 License. Features Modern and responsive Bootstrap 3 HTML5 interface Full graphical setup Comprehensive user management with fine grained per user permissions…
read the full calibre-web overview →
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Frequently asked questions
Is ebook2audiobook or calibre-web more popular?
ebook2audiobook has 20,483 GitHub stars and calibre-web has 18,524. ebook2audiobook has the larger community by that measure.
Are ebook2audiobook and calibre-web free?
Both are open source. ebook2audiobook is licensed under Apache-2.0 and calibre-web under GPL-3.0. Neither carries a licence fee.
What is the difference between ebook2audiobook and calibre-web?
ebook2audiobook is written in Python and calibre-web in Fluent. The practical differences are community size, licence terms, language stack and release cadence — all compared in the table above.
Which should I choose, ebook2audiobook or calibre-web?
Choose ebook2audiobook if you want the larger community (20,483 stars) or its Apache-2.0 licence terms. Choose calibre-web if its feature set, stack or GPL-3.0 licence fits better. Both are self-hostable.