head to head · open source
calibre vs Lingo.dev
calibre has 25,923 GitHub stars, 2,690 forks, 6 open issues and last shipped yesterday. Lingo.dev has 5,402 stars, 810 forks, 34 open issues and last shipped 3 days ago. calibre leads on adoption by 380% (25,923 vs 5,402 stars). calibre is written in Python under GPL-3.0; Lingo.dev is written in TypeScript under Apache-2.0. calibre has attracted 10% as many forks as stars, Lingo.dev 15%. calibre 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 | Lingo.dev | |
|---|---|---|
| GitHub stars | ★ 26K | ★ 5.4K |
| License | GPL-3.0 | Apache-2.0 |
| Written in | Python | TypeScript |
| Last push | 2026-09-17 | 2026-09-15 |
| Forks | ⑂ 2.7K | ⑂ 810 |
| Self-hosting | Yes | Yes |
| Data ownership | Your server | Your server |
pick calibre if
- You weight community size — 26K stars and counting
- You want the GPL-3.0 license terms
- Your stack matches Python
- You value the larger contributor base for long-term maintenance
pick Lingo.dev if
- You want the Lingo.dev feature set and don't need the biggest community
- You prefer the Apache-2.0 license terms
- Your stack matches TypeScript
- You evaluated both and Lingo.dev fits your workflow better
About calibre
calibre is the official source code repository for the calibre e book manager, an open source application written in Python and released under GPL 3.0. It lives in the content and publishing ecosystem as a desktop tool for books, and it is cross platform, running on Linux, Windows and macOS. The project has been hosted on GitHub for roughly thirteen years, carries about 25,900 stars and 2,683 forks, and its home on the web is calibre ebook.com, where an About page and a screenshots page document it further.
read the full calibre overview →
About Lingo.dev
Lingo.dev is an open source suite of localization engineering tools that connects codebases and commits to translation APIs, built for developers and teams maintaining multilingual JavaScript, React, React Native, and TypeScript applications.
read the full Lingo.dev overview →
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Frequently asked questions
Is calibre or Lingo.dev more popular?
calibre has 25,923 GitHub stars and Lingo.dev has 5,402. calibre has the larger community by that measure.
Are calibre and Lingo.dev free?
Both are open source. calibre is licensed under GPL-3.0 and Lingo.dev under Apache-2.0. Neither carries a licence fee.
What is the difference between calibre and Lingo.dev?
calibre is written in Python and Lingo.dev in TypeScript. The practical differences are community size, licence terms, language stack and release cadence — all compared in the table above.
Which should I choose, calibre or Lingo.dev?
Choose calibre if you want the larger community (25,923 stars) or its GPL-3.0 licence terms. Choose Lingo.dev if its feature set, stack or Apache-2.0 licence fits better. Both are self-hostable.