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 1–5 of 5
| Name | Language | Stars | Downloads / month (approx.) | MCP | A2A | Multi-agent |
|---|---|---|---|---|---|---|
| GitHub Copilot SDK Multi-language SDKs for embedding the GitHub Copilot agent runtime, with planning, tool calls and file edits, in your apps. | Python, TypeScript, Go, C#, Java, Rust | 10.6K | ~5M | Not stated | Not stated | — |
| 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 |
| Microsoft Teams SDK SDK for building Microsoft Teams apps and AI agents in TypeScript, C# and Python, with a CLI that scaffolds new agents. | TypeScript, C#, Python | 731 | ~2.1M | Not stated | Not stated | — |