head to head · open source
Calibre-Web-Automated vs WritingTools
Calibre-Web-Automated has 6,308 GitHub stars, 521 forks, 443 open issues and last shipped 1 months ago. WritingTools has 2,455 stars, 159 forks, 79 open issues and last shipped 1 months ago. Calibre-Web-Automated leads on adoption by 157% (6,308 vs 2,455 stars). Calibre-Web-Automated is written in JavaScript under GPL-3.0; WritingTools is written in Swift under GPL-3.0. Calibre-Web-Automated has attracted 8% as many forks as stars, WritingTools 6%. WritingTools 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-Automated | WritingTools | |
|---|---|---|
| GitHub stars | ★ 6.3K | ★ 2.5K |
| License | GPL-3.0 | GPL-3.0 |
| Written in | JavaScript | Swift |
| Last push | 2026-08-07 | 2026-08-19 |
| Forks | ⑂ 521 | ⑂ 159 |
| Self-hosting | Yes | Yes |
| Data ownership | Your server | Your server |
pick Calibre-Web-Automated if
- You weight community size — 6.3K stars and counting
- You want the GPL-3.0 license terms
- Your stack matches JavaScript
- You value the larger contributor base for long-term maintenance
pick WritingTools if
- You want the WritingTools feature set and don't need the biggest community
- You prefer the GPL-3.0 license terms
- Your stack matches Swift
- You evaluated both and WritingTools fits your workflow better
About Calibre-Web-Automated
Calibre Web Automated is a free, GPL 3.0, self hosted digital library server distributed as the Docker image crocodilestick/calibre web automated , aimed at self hosters who want one automated service instead of running Calibre and Calibre Web side by side.
read the full Calibre-Web-Automated overview →
About WritingTools
WritingTools is an open source, system wide writing assistant for Windows, Linux, and macOS. It is inspired by Apple Intelligence Writing Tools and uses cloud based or local large language models to proofread, rewrite, summarize, and transform selected text across applications. The project is written in Swift and released under the GPL 3.0 license. The README states it works in nearly any language.
read the full WritingTools overview →
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Frequently asked questions
Is Calibre-Web-Automated or WritingTools more popular?
Calibre-Web-Automated has 6,308 GitHub stars and WritingTools has 2,455. Calibre-Web-Automated has the larger community by that measure.
Are Calibre-Web-Automated and WritingTools free?
Both are open source. Calibre-Web-Automated is licensed under GPL-3.0 and WritingTools under GPL-3.0. Neither carries a licence fee.
What is the difference between Calibre-Web-Automated and WritingTools?
Calibre-Web-Automated is written in JavaScript and WritingTools in Swift. 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-Automated or WritingTools?
Choose Calibre-Web-Automated if you want the larger community (6,308 stars) or its GPL-3.0 licence terms. Choose WritingTools if its feature set, stack or GPL-3.0 licence fits better. Both are self-hostable.