head to head · open source
papermill vs Calibre-Web-Automated
papermill has 6,485 GitHub stars, 462 forks, 196 open issues and last shipped 3 months ago. Calibre-Web-Automated has 6,308 stars, 521 forks, 443 open issues and last shipped 1 months ago. papermill leads on adoption by 3% (6,485 vs 6,308 stars). papermill is written in Python under BSD-3-Clause; Calibre-Web-Automated is written in JavaScript under GPL-3.0. papermill has attracted 7% as many forks as stars, Calibre-Web-Automated 8%. Calibre-Web-Automated 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
| papermill | Calibre-Web-Automated | |
|---|---|---|
| GitHub stars | ★ 6.5K | ★ 6.3K |
| License | BSD-3-Clause | GPL-3.0 |
| Written in | Python | JavaScript |
| Last push | 2026-07-06 | 2026-08-07 |
| Forks | ⑂ 462 | ⑂ 521 |
| Self-hosting | Yes | Yes |
| Data ownership | Your server | Your server |
pick papermill if
- You weight community size — 6.5K stars and counting
- You want the BSD-3-Clause license terms
- Your stack matches Python
- You value the larger contributor base for long-term maintenance
pick Calibre-Web-Automated if
- You want the Calibre-Web-Automated feature set and don't need the biggest community
- You prefer the GPL-3.0 license terms
- Your stack matches JavaScript
- You evaluated both and Calibre-Web-Automated fits your workflow better
About papermill
Papermill is a Python tool published under the BSD 3 Clause licence by the nteract project that parameterizes, executes, and analyzes Jupyter notebooks, and it is aimed at teams who need to run the same notebook repeatedly with different inputs inside data pipelines.
read the full papermill overview →
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 →
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Frequently asked questions
Is papermill or Calibre-Web-Automated more popular?
papermill has 6,485 GitHub stars and Calibre-Web-Automated has 6,308. papermill has the larger community by that measure.
Are papermill and Calibre-Web-Automated free?
Both are open source. papermill is licensed under BSD-3-Clause and Calibre-Web-Automated under GPL-3.0. Neither carries a licence fee.
What is the difference between papermill and Calibre-Web-Automated?
papermill is written in Python and Calibre-Web-Automated in JavaScript. The practical differences are community size, licence terms, language stack and release cadence — all compared in the table above.
Which should I choose, papermill or Calibre-Web-Automated?
Choose papermill if you want the larger community (6,485 stars) or its BSD-3-Clause licence terms. Choose Calibre-Web-Automated if its feature set, stack or GPL-3.0 licence fits better. Both are self-hostable.