
langfuse
langfuse/langfuse🪢 Open source agent evals & observability: Trace, evaluate, and improve LLM applications with one open platform.
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1,407 apps, agents and plugins from GitHub, ranked on how actively they are maintained rather than on stars. Security review is in progress and every project shows exactly what has and has not been checked.
Review is in progress. 1,407 projects are queued and none has been approved yet. Everything unreviewed is discovery metadata imported from GitHub — listed, not vetted.
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🪢 Open source agent evals & observability: Trace, evaluate, and improve LLM applications with one open platform.

Mastra is the modern TypeScript framework for AI-powered applications and agents.

Observability and enforcement for AI agent harnesses. Capture every run and runtime reliability with policy enforcement.

Build, Evaluate, and Optimize AI Systems. Includes evals, RAG, agents, fine-tuning, synthetic data generation, dataset management, MCP, and more.

Code, Build and Evaluate agents - excellent Model and Skills/MCP/ACP/A2A Support