head to head · open source
Langfuse vs server
Langfuse has 34,826 GitHub stars, 3,815 forks, 926 open issues and last shipped yesterday. server has 8,250 stars, 2,105 forks, 495 open issues and last shipped yesterday. Langfuse leads on adoption by 322% (34,826 vs 8,250 stars). Langfuse is written in TypeScript under a custom or non-standard licence; server is written in C++ under GPL-2.0. Langfuse has attracted 11% as many forks as stars, server 26%. server 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 | server | |
|---|---|---|
| GitHub stars | ★ 35K | ★ 8.3K |
| License | Custom / other | GPL-2.0 |
| Written in | TypeScript | C++ |
| Last push | 2026-09-19 | 2026-09-19 |
| Forks | ⑂ 3.8K | ⑂ 2.1K |
| Self-hosting | Yes | Yes |
| Data ownership | Your server | Your server |
pick Langfuse if
- You weight community size — 35K 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 server if
- You want the server feature set and don't need the biggest community
- You prefer the GPL-2.0 license terms
- Your stack matches C++
- You evaluated both and server fits your workflow better
About Langfuse
Langfuse is an open source LLM engineering platform for building, monitoring, and improving AI powered applications. It lives in the LLMops ecosystem and provides tooling for the full development lifecycle—from prompt iteration and evaluation to observability and dataset management. Built with TypeScript and powered by ClickHouse, it enables teams to track LLM calls, user sessions, and internal logic like retrieval or agent actions in a unified interface.
read the full Langfuse overview →
About server
MariaDB Server is a community developed, GPL 2.0 relational database server forked from MySQL by the original MySQL developers, aimed at teams that want MySQL compatibility with a sanely licensed, independently governed SQL server.
read the full server overview →
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Frequently asked questions
Is Langfuse or server more popular?
Langfuse has 34,826 GitHub stars and server has 8,250. Langfuse has the larger community by that measure.
Are Langfuse and server free?
Both are open source. Langfuse has no licence declared in this registry, and server is licensed under GPL-2.0. Both are free to self-host.
What is the difference between Langfuse and server?
Langfuse is written in TypeScript and server 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 server?
Choose Langfuse if you want the larger community (34,826 stars) or its Custom / other licence terms. Choose server if its feature set, stack or GPL-2.0 licence fits better. Both are self-hostable.