head to head · open source
Langfuse vs zvec
Langfuse has 36,970 GitHub stars, 4,150 forks, 926 open issues and last shipped yesterday. zvec has 16,181 stars, 1,017 forks, 56 open issues and last shipped 2 days ago. Langfuse leads on adoption by 128% (36,970 vs 16,181 stars). Langfuse is written in TypeScript under a custom or non-standard licence; zvec is written in C++ under Apache-2.0. Langfuse has attracted 11% as many forks as stars, zvec 6%. Langfuse 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
| Langfuse | zvec | |
|---|---|---|
| GitHub stars | ★ 37K | ★ 16K |
| License | Custom / other | Apache-2.0 |
| Written in | TypeScript | C++ |
| Last push | 2026-11-04 | 2026-11-03 |
| Forks | ⑂ 4.2K | ⑂ 1.0K |
| Self-hosting | Yes | Yes |
| Data ownership | Your server | Your server |
pick Langfuse if
- You weight community size — 37K stars and counting
- You want the Custom / other license terms
- Your stack matches TypeScript
- You value the larger contributor base for long-term maintenance
pick zvec if
- You want the zvec feature set and don't need the biggest community
- You prefer the Apache-2.0 license terms
- Your stack matches C++
- You evaluated both and zvec fits your workflow better
About Langfuse
Langfuse Cloud · Self Host · Demo Docs · Report Bug · Feature Request · Changelog · Roadmap · Langfuse is an open source LLM engineering platform. It helps teams collaboratively develop, monitor, evaluate, and debug AI applications. Langfuse can be self hosted in minutes and is battle tested . Proudly made with ClickHouse open source database. 🧑💻 We're hiring Langfuse is growing fast (we doubled the team in the last 6 months) since January 2026 we're part of ClickHouse, we're hiring engineering hybrid across the EU. We hire engineers who love open source and great developer experiences. See open roles → ✨…
read the full Langfuse overview →
About zvec
English 中文 🚀 Quickstart 🏠 Home 📚 Docs 📊 Benchmarks 🔎 DeepWiki 🎮 Discord 🐦 X (Twitter) Zvec is an open source, in process vector database — lightweight, lightning fast, and designed to embed directly into applications. Battle tested within Alibaba Group, it delivers production grade, low latency and scalable similarity search with minimal setup. [!Important] 🚀 v0.7.0 (August 24, 2026) zvec grep ( zg ) : Local first workspace search that unifies ripgrep, BM25, and vector search behind one CLI — built for humans and AI agents. ReMe integration : zvec is now a file store backend in ReMe, the memory…
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Frequently asked questions
Is Langfuse or zvec more popular?
Langfuse has 36,970 GitHub stars and zvec has 16,181. Langfuse has the larger community by that measure.
Are Langfuse and zvec free?
Both are open source. Langfuse has no licence declared in this registry, and zvec is licensed under Apache-2.0. Both are free to self-host.
What is the difference between Langfuse and zvec?
Langfuse is written in TypeScript and zvec in C++. The practical differences are community size, licence terms, language stack and release cadence — all compared in the table above.
Which should I choose, Langfuse or zvec?
Choose Langfuse if you want the larger community (36,970 stars) or its Custom / other licence terms. Choose zvec if its feature set, stack or Apache-2.0 licence fits better. Both are self-hostable.