1.BerriAI / litellmThe fastest, litest AI Gateway. Rust core with Python SDK. Call 100+ LLM APIs in OpenAI (or native) format with cost tracking, guardrails, load balancing, and logging [Bedrock, Azure, OpenAI, Anthropic, OpenAI, VertexAI, vLLM, Nvidia NIM]anthropiclangchainllmllmopsopenaiai-gateway+10 morePythonOther license63K total13K forks+7,353 starsfrom 55,146 · score 8.90
2.future-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.ai-gatewayobservabilitysimulationai-agentsai-evalsevaluation-framework+14 morePythonAPACHE-2.02.2K total705 forks+666 starsfrom 1,571 · score 6.50