head to head · open source
calibre-web vs Weblate
calibre-web has 18,530 GitHub stars, 1,902 forks, 409 open issues and last shipped 26 days ago. Weblate has 6,155 stars, 1,380 forks, 493 open issues and last shipped yesterday. calibre-web leads on adoption by 201% (18,530 vs 6,155 stars). calibre-web is written in Fluent under GPL-3.0; Weblate is written in Python under GPL-3.0. calibre-web has attracted 10% as many forks as stars, Weblate 22%. Weblate was the more recently maintained of the two, and both are self-hostable with no licence fee.
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
| calibre-web | Weblate | |
|---|---|---|
| GitHub stars | ★ 19K | ★ 6.2K |
| License | GPL-3.0 | GPL-3.0 |
| Written in | Fluent | Python |
| Last push | 2026-10-10 | 2026-11-04 |
| Forks | ⑂ 1.9K | ⑂ 1.4K |
| Self-hosting | Yes | Yes |
| Data ownership | Your server | Your server |
pick calibre-web if
- You weight community size — 19K stars and counting
- You want the GPL-3.0 license terms
- Your stack matches Fluent
- You value the larger contributor base for long-term maintenance
pick Weblate if
- You want the Weblate feature set and don't need the biggest community
- You prefer the GPL-3.0 license terms
- Your stack matches Python
- You evaluated both and Weblate fits your workflow better
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 →
About Weblate
.. image:: :alt: Weblate :target: :height: 80px Weblate is libre software web based continuous localization system, used by over 2500 libre projects and companies in more than 165 countries. Install it, or use the Hosted Weblate service at weblate.org . .. image:: :alt: Website :target: .. image:: :alt: Translation status :target: .. image:: :alt: CII Best Practices :target: .. image:: :alt: REUSE status :target: .. image:: :target: .. image:: :target: .. image:: :alt: License :target: .. image:: :alt: Covered by Argos Visual Testing :target: Support Weblate is libre software with optional professional support…
read the full Weblate overview →
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Frequently asked questions
Is calibre-web or Weblate more popular?
calibre-web has 18,530 GitHub stars and Weblate has 6,155. calibre-web has the larger community by that measure.
Are calibre-web and Weblate free?
Both are open source. calibre-web is licensed under GPL-3.0 and Weblate under GPL-3.0. Neither carries a licence fee.
What is the difference between calibre-web and Weblate?
calibre-web is written in Fluent and Weblate in Python. The practical differences are community size, licence terms, language stack and release cadence — all compared in the table above.
Which should I choose, calibre-web or Weblate?
Choose calibre-web if you want the larger community (18,530 stars) or its GPL-3.0 licence terms. Choose Weblate if its feature set, stack or GPL-3.0 licence fits better. Both are self-hostable.