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Hand-picked open-source tools compared side-by-side by task, featuring architecture diagrams, commit sparklines, and spec tables.
Best Open-Source Multi-Agent Frameworks in Python & .NET (2026)
Side-by-side comparison of open-source multi-agent and agentic frameworks: CrewAI, Pydantic AI, Google ADK, Microsoft Agent Framework, AgentScope, MetaGPT, and AutoGen.
Best Self-Hosted AI Workflow Automation & Durable Execution Tools (2026)
Compare self-hosted workflow automation builders and durable execution engines for AI agents: n8n, Activepieces, Temporal, Conductor, AutoKitteh, and RuleGo.
Best Open-Source RAG Platforms & Deep Research Agents (2026)
Compare open-source RAG knowledge-base engines and autonomous deep research agents: RAGFlow, MaxKB, GPT Researcher, DeerFlow, MiroThinker, and code-graph-rag.
Best SDKs & Frameworks for Building MCP Servers (2026)
Compare the main ways to build or expose a Model Context Protocol (MCP) server: FastMCP, the official MCP Python SDK, FastAPI-MCP, Grafbase, GitHub MCP Server, and AWS MCP Servers.
Best MCP Servers for Databases: Postgres, MySQL, MongoDB (2026)
Compare open-source MCP servers that let AI assistants query PostgreSQL, MySQL, MongoDB and more, with stars, licence, last update and install command side by side.
Best MCP Servers for Browser Automation: Playwright, Chrome DevTools (2026)
Compare MCP servers that let AI agents drive or inspect a browser: Playwright MCP, Chrome DevTools MCP, Browserbase and more, with licence, stars and install commands.
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AgentIndex indexes over 3,000+ open-source AI tools, MCP servers, and agent frameworks. Use side-by-side comparison tables and use-case guides to understand key differences, licenses, and architecture tradeoffs.