175 listed
Harnesses & SDKs
Frameworks and SDKs for building agents: the Claude Agent SDK, OpenAI Agents SDK, LangGraph, CrewAI and many more. Each page lists languages, packages, MCP and A2A support and how it orchestrates agents, with a link to the page every fact came from.
Showing 1–4 of 4
| Name | Language | Stars | Downloads / month (approx.) | MCP | A2A | Multi-agent |
|---|---|---|---|---|---|---|
| agent-governance-toolkit Policy enforcement, identity, sandboxing and reliability tooling for autonomous AI agents, installable with one pip command. | Python, TypeScript, C# | 6.5K | ~121.3K | Not stated | Not stated | Yes |
| BotSharp C# framework on .NET for building multi-agent AI bots with plugins, RAG, MCP integration and a built-in admin UI. | C# | 3.1K | — | Built in | Not stated | Yes |
| Semantic Kernel Model-agnostic SDK for building agents and multi-agent systems in Python, .NET and Java; Microsoft names Agent Framework as its successor. | Python, C#, Java | 28.7K | ~332.1K | Built in | Not stated | Yes |
| Microsoft Agent Framework Open framework for building and hosting production-grade AI agents and multi-agent workflows in .NET and Python. | Python, C#, Go | 14.3K | ~204K | Not stated | Not stated | Yes |