head to head · open source
Zotero vs saber
Zotero has 15,327 GitHub stars, 1,124 forks, 1,600 open issues and last shipped 3 days ago. saber has 4,817 stars, 371 forks, 401 open issues and last shipped 5 days ago. Zotero leads on adoption by 218% (15,327 vs 4,817 stars). Zotero is written in JavaScript under a custom or non-standard licence; saber is written in Dart under GPL-3.0. Zotero has attracted 7% as many forks as stars, saber 8%. Zotero 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
| Zotero | saber | |
|---|---|---|
| GitHub stars | ★ 15K | ★ 4.8K |
| License | Custom / other | GPL-3.0 |
| Written in | JavaScript | Dart |
| Last push | 2026-09-17 | 2026-09-15 |
| Forks | ⑂ 1.1K | ⑂ 371 |
| Self-hosting | Yes | Yes |
| Data ownership | Your server | Your server |
pick Zotero if
- You weight community size — 15K stars and counting
- You want the Custom / other license terms
- Your stack matches JavaScript
- You value the larger contributor base for long-term maintenance
pick saber if
- You want the saber feature set and don't need the biggest community
- You prefer the GPL-3.0 license terms
- Your stack matches Dart
- You evaluated both and saber fits your workflow better
About Zotero
Zotero is a free tool for research sources. It lives in the JavaScript application ecosystem and is listed under Productivity & Utilities / Note Taking & Knowledge Management. The provided GitHub metadata reports 15,272 stars, 1,117 forks, 1,600 open issues, 0 contributors, a repository age of 0 years, and a last push timestamp of 2026 09 14T16:40:51Z. The homepage is https://www.zotero.org, and no topics are listed. The license field is NOASSERTION.
read the full Zotero overview →
About saber
Saber is a cross platform, open source handwriting notes app for Android, iOS, Linux, macOS and Windows, built for students, professionals and anyone else who writes by hand on a screen and wants their notes to stay on their own terms.
read the full saber overview →
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Frequently asked questions
Is Zotero or saber more popular?
Zotero has 15,327 GitHub stars and saber has 4,817. Zotero has the larger community by that measure.
Are Zotero and saber free?
Both are open source. Zotero has no licence declared in this registry, and saber is licensed under GPL-3.0. Both are free to self-host.
What is the difference between Zotero and saber?
Zotero is written in JavaScript and saber in Dart. The practical differences are community size, licence terms, language stack and release cadence — all compared in the table above.
Which should I choose, Zotero or saber?
Choose Zotero if you want the larger community (15,327 stars) or its Custom / other licence terms. Choose saber if its feature set, stack or GPL-3.0 licence fits better. Both are self-hostable.