head to head · open source
calibre vs Languine
calibre has 26,327 GitHub stars, 2,743 forks, 6 open issues and last shipped yesterday. Languine has 2,032 stars, 132 forks, 10 open issues and last shipped 6 months ago. calibre leads on adoption by 1,196% (26,327 vs 2,032 stars). calibre is written in Python under GPL-3.0; Languine is written in TypeScript under MIT. calibre has attracted 10% as many forks as stars, Languine 6%. 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 | Languine | |
|---|---|---|
| GitHub stars | ★ 26K | ★ 2.0K |
| License | GPL-3.0 | MIT |
| Written in | Python | TypeScript |
| Last push | 2026-11-02 | 2026-05-09 |
| Forks | ⑂ 2.7K | ⑂ 132 |
| 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 Languine if
- You want the Languine feature set and don't need the biggest community
- You prefer the MIT license terms
- Your stack matches TypeScript
- You evaluated both and Languine fits your workflow better
About calibre
calibre calibre is an e book manager. It can view, convert, edit and catalog e books in all of the major e book formats. It can also talk to e book reader devices. It can go out to the internet and fetch metadata for your books. It can download newspapers and convert them into e books for convenient reading. It is cross platform, running on Linux, Windows and macOS. For more information, see the calibre About page. Screenshots Screenshots page Usage See the User Manual. Development Setting up a development environment for calibre. A tarball of the source code for the current calibre release. Bugs Bug reports and…
read the full calibre overview →
About Languine
Languine Self hosted, Vercel native AI localization. Click Deploy. Run npx languine . That's it. One click deploy .%20AI MODEL%20is%20optional%20(default%20openai%2Fgpt 4.1).&envLink=https%3A%2F%2Fgithub.com%2Flanguine ai%2Flanguine%23environment variables&stores=%5B%7B%22type%22%3A%22postgres%22%2C%22productSlug%22%3A%22neon%22%7D%5D&demo title=Languine&demo description=Self hosted%20AI%20localization%20on%20your%20own%20Vercel%20account&demo image=https%3A%2F%2Fraw.githubusercontent.com%2Flanguine ai%2Flanguine%2Fmain%2Fapps%2Fweb%2Fsrc%2Fapp%2Fopengraph image.png&demo url=https%3A%2F%2Flanguine.ai) What the…
read the full Languine overview →
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Frequently asked questions
Is calibre or Languine more popular?
calibre has 26,327 GitHub stars and Languine has 2,032. calibre has the larger community by that measure.
Are calibre and Languine free?
Both are open source. calibre is licensed under GPL-3.0 and Languine under MIT. Neither carries a licence fee.
What is the difference between calibre and Languine?
calibre is written in Python and Languine 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 Languine?
Choose calibre if you want the larger community (26,327 stars) or its GPL-3.0 licence terms. Choose Languine if its feature set, stack or MIT licence fits better. Both are self-hostable.