1.Arize-ai / phoenix
AI Observability & Evaluation
+96 stars
from 11,999 · score 4.57
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2.future-agi / future-agi
Open-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.
+37 stars
from 2,200 · score 3.64
3.latitude-dev / latitude-llm
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.
+8 stars
from 4,734 · score 2.20