head to head · open source
SurfSense vs Zotero
SurfSense has 16,159 GitHub stars, 1,537 forks, 130 open issues and last shipped yesterday. Zotero has 15,308 stars, 1,120 forks, 1,600 open issues and last shipped yesterday. SurfSense leads on adoption by 6% (16,159 vs 15,308 stars). SurfSense is written in Python under a custom or non-standard licence; Zotero is written in JavaScript under a custom or non-standard licence. SurfSense has attracted 10% as many forks as stars, Zotero 7%. SurfSense 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
| SurfSense | Zotero | |
|---|---|---|
| GitHub stars | ★ 16K | ★ 15K |
| License | Custom / other | Custom / other |
| Written in | Python | JavaScript |
| Last push | 2026-09-17 | 2026-09-17 |
| Forks | ⑂ 1.5K | ⑂ 1.1K |
| Self-hosting | Yes | Yes |
| Data ownership | Your server | Your server |
pick SurfSense if
- You weight community size — 16K stars and counting
- You want the Custom / other license terms
- Your stack matches Python
- You value the larger contributor base for long-term maintenance
pick Zotero if
- You want the Zotero feature set and don't need the biggest community
- You prefer the Custom / other license terms
- Your stack matches JavaScript
- You evaluated both and Zotero fits your workflow better
About SurfSense
SurfSense is an open source NotebookLM alternative and privacy first knowledge base that can work with any AI model chosen by the user. It is a Python productivity and knowledge management project in the agent, RAG, LangChain, LangGraph, FastAPI, Next.js, and Ollama ecosystem. The project presents itself as an open web research platform for AI agents, with live data connectors and a built in knowledge base that keeps findings searchable with citations.
read the full SurfSense overview →
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 →
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Frequently asked questions
Is SurfSense or Zotero more popular?
SurfSense has 16,159 GitHub stars and Zotero has 15,308. SurfSense has the larger community by that measure.
Are SurfSense and Zotero free?
Neither SurfSense nor Zotero declares a licence in this registry, so check each project's own repository before relying on either for a commercial use. Both are free to self-host.
What is the difference between SurfSense and Zotero?
SurfSense is written in Python and Zotero 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, SurfSense or Zotero?
Choose SurfSense if you want the larger community (16,159 stars) or its Custom / other licence terms. Choose Zotero if its feature set, stack or Custom / other licence fits better. Both are self-hostable.