head to head · open source
calibre vs Lingo.dev
calibre has 26,327 GitHub stars, 2,743 forks, 6 open issues and last shipped yesterday. Lingo.dev has 5,400 stars, 811 forks, 34 open issues and last shipped 8 days ago. calibre leads on adoption by 388% (26,327 vs 5,400 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 | 2026-11-02 | 2026-10-26 |
| Forks | ⑂ 2.7K | ⑂ 811 |
| 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 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 Lingo.dev
Open source localization engineering tools. Connect to Lingo.dev localization engineering platform for consistent, quality translations. Lingo API • Lingo React MCP • Lingo CLI • Lingo GitHub Action • Lingo Compiler for React (Early alpha) Quick Start Localization engines These tools connect to localization engines – stateful translation APIs you create on the Lingo.dev localization engineering platform. Each engine persists glossaries, brand voice, and per locale instructions across every request, reducing terminology errors 16.6–44.6%. Or bring your own LLM. Lingo.dev MCP Setting up i18n in React apps is error…
read the full Lingo.dev overview →
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Frequently asked questions
Is calibre or Lingo.dev more popular?
calibre has 26,327 GitHub stars and Lingo.dev has 5,400. 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 (26,327 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.