AI Agent Tools Directory — Tracing, Evaluation & Frameworks

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High-traffic selection hubs for agent tracing and evaluation tooling.

Agent Evaluation

Best AI Agent Evaluation Platforms in 2026

Compare agent evaluation platforms and software for tool-use regressions, trace-linked evals, cost, and latency before agents reach users.

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Agent Tracing

7 Best Agent Tracing Tools (LangSmith, Langfuse, Phoenix)

Compare agent tracing tools for inspectable runs: prompts, tool calls, retrieved context, errors, retries, cost, and latency.

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15 tools tagged with Agent Frameworks

All Agent Memory Agentic RAG MCP Servers Agent Frameworks Agent Evaluation Agent Tracing

Tool	Categories	Type
AgnoLightweight agent framework with a clear path from SDK to production API.	Categories Agent Frameworks	TypeOpen source
browser-useBrowser automation agents for complex web tasks and skill-based workflows.	Categories Agent Frameworks	TypeOpen source
Browserbase StagehandNatural-language browser automation backed by production cloud browsers.	Categories Agent Frameworks	TypeOpen source
Cloudflare Agents SDKDeploy agents at the edge on Cloudflare Workers.	Categories Agent Frameworks	TypeOpen source
CrewAIRole-based multi-agent workflow framework.	Categories Agent Frameworks	TypeOpen source
E2BCloud sandbox for agents that write code, execute commands, and handle files.	Categories Agent Frameworks	TypeOpen source
Google Agent Development KitGoogle's open-source agent framework with multi-agent, A2A protocol, and production deployment.	Categories Agent Frameworks	TypeOpen source
LangGraphStateful graph orchestration for controllable agents.	Categories Agent FrameworksAgent MemoryAgent Tracing	TypeOpen source
LlamaIndexData and retrieval framework for LLM and agent apps.	Categories Agentic RAGAgent MemoryAgent Frameworks	TypeOpen source
MastraTypeScript-first agent framework with workflows, observability, and RAG.	Categories Agent Frameworks	TypeOpen source
Microsoft AutoGenFramework for multi-agent conversations and collaboration.	Categories Agent Frameworks	TypeOpen source
OpenAI Agents SDKA lightweight SDK for agents, tools, handoffs, and traces.	Categories Agent FrameworksAgent EvaluationAgent Tracing	TypeOpen source
OpenHandsOpen-source software engineering agent for code, files, and terminals.	Categories Agent Frameworks	TypeOpen source
Pydantic AIType-safe agent framework for Python with structured output validation.	Categories Agent Frameworks	TypeOpen source
Strands AgentsAWS-native agent SDK for tool use and deployment.	Categories Agent Frameworks	TypeOpen source