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Repositories in this selection 12 · UTC 2026-11-04
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1—Llangfuse / langfuse🪢 Open source agent evals & observability: Trace, evaluate, and improve LLM applications with one open platform.TypeScriptNOASSERTION · Restricted / unknownInsufficient rank history36,8964,146——2026-11-02
2—Ccomet-ml / opikAuthor description: Debug, evaluate, and monitor your LLM applications, RAG systems, and agentic workflows with comprehensive tracing, automated evaluations, and production-ready dashboards.PythonApache-2.0 · PermissiveInsufficient rank history23,1221,923——2026-11-02
3—VVoltAgent / voltagentAI Agent Engineering Platform built on an Open Source TypeScript AI Agent FrameworkTypeScriptMIT · PermissiveInsufficient rank history10,9161,184——2026-10-15
4—Mmaximhq / bifrostOpen-source, high-performance AI gateway that works as your LLM gateway, MCP gateway and agent gateway. One OpenAI-compatible API for 10,000+ models, with failover, load balancing, semantic caching, virtual keys, budgets and MCP Code Mode. Works with any SDK or agent and adds under 200μs of overhead at 5k RPS.GoApache-2.0 · PermissiveInsufficient rank history9,3101,515——2026-11-03
5—Mmnfst / llm-gatewayOpen Source LLM Gateway 🦚TypeScriptMIT · PermissiveInsufficient rank history7,613524——2026-11-02
6—FFailproofAI / failproofaiObservability and enforcement for AI agent harnesses. Capture every run and runtime reliability with policy enforcement.TypeScriptNOASSERTION · Restricted / unknownInsufficient rank history7,482554——2026-11-03
7—HHelicone / helicone🧊 Open source LLM observability platform. One line of code to monitor, evaluate, and experiment. YC W23 🍓TypeScriptApache-2.0 · PermissiveInsufficient rank history6,254701——2026-10-28
8—Ccoze-dev / coze-loopNext-generation AI Agent Optimization Platform: Cozeloop addresses challenges in AI agent development by providing full-lifecycle management capabilities from development, debugging, and evaluation to monitoring.GoApache-2.0 · PermissiveInsufficient rank history5,799803——2026-11-02
9—Llatitude-dev / latitude-llmOpen-source observability for AI agents. Find where your agents fail, dispatch your coding agent to fix it, and verify the fix against real traces.TypeScriptMIT · PermissiveInsufficient rank history4,743407——2026-11-02
10—Ppydantic / logfireAI observability platform for production LLM and agent systems.PythonMIT · PermissiveInsufficient rank history4,530351——2026-11-03
11—Llmnr-ai / lmnrLaminar - open-source observability platform purpose-built for AI agents. YC S24.TypeScriptApache-2.0 · PermissiveInsufficient rank history3,472258——2026-11-02
12—Ffuture-agi / future-agiOpen-source, end-to-end platform for evaluating, observing, and improving LLM and AI agent applications. Tracing · Evals · Simulations · Datasets · Gateway · Guardrails. Self-hostable. Apache 2.0.PythonApache-2.0 · PermissiveInsufficient rank history2,241704——2026-11-03
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