1.langfuse / langfuse
🪢 Open source agent evals & observability: Trace, evaluate, and improve LLM applications with one open platform.
+1,590 stars
from 35,254 · score 7.37
Ranked by Attention Score: stars gained over the last 30 complete days
5 repositories by Attention Score · Oct 4, 2026 – Nov 2, 2026 (UTC)
🪢 Open source agent evals & observability: Trace, evaluate, and improve LLM applications with one open platform.
Local gateway for Claude Code, Codex and other AI clients on macOS, Windows and Linux: switch upstreams without touching clients, keep API keys from relays, cut off malicious tool calls, trace every request.
AI Agent Engineering Platform built on an Open Source TypeScript AI Agent Framework
Open Source LLM Gateway 🦚
Open-source observability for AI agents. Find where your agents fail, dispatch your coding agent to fix it, and verify the fix against real traces.