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 97–101 of 101
| Name | Language | Stars | Downloads / month (approx.) | MCP | A2A | Multi-agent |
|---|---|---|---|---|---|---|
| OpenRath PyTorch-style Python framework for multi-agent, multi-session workflows, with a durable production runtime in v2.0.0. | Python | 961 | ~99 | Not stated | Not stated | Yes |
| Rasa Open-source Python framework for text and voice assistants; the open-source edition is in maintenance mode while Rasa moves to its CALM engine. | Python | 21.4K | ~202.8K | Not stated | Not stated | — |
| Akka SDK SDK for building durable, responsive services, including agentic AI services, that cluster automatically and deploy to any infrastructure. | Java | 30 | — | Not stated | Not stated | Yes |
| AgentScope Runtime Python runtime for agent apps with tool sandboxing and streaming agent APIs; archived, with features moved to AgentScope 2.0. | Python | 878 | ~11.8K | Not stated | Not stated | — |
| workflow Workflow SDK: Build durable, reliable, and observable apps and AI Agents in TypeScript | TypeScript | 2.5K | — | Not stated | Not stated | — |