Multi-agent and orchestration
Harnesses and patterns for multi-agent coordination and handoffs.
| # | Project | Stars | Tier | OSS | Description |
|---|---|---|---|---|---|
| 1 | MetaGPT multi-agentpython | 69.6k | complex | ✅ | The "AI software company" multi-agent framework: role-played PM, architect, and engineer agents turn a one-line requirement into specs, designs, and code along an SOP assembly line. The landmark of the genre; development pace has slowed in 2026. |
| 2 | autogen multi-agentpython | 60.2k | complex | ✅ CC-BY | Conversable agents and group chats; code execution and human-in-the-loop; Microsoft origin, AG2 ecosystem. |
| 3 | OpenManus multi-agentpython | 57.8k | complex | ✅ | Open, invite-free general agent from the MetaGPT team: planning plus tool use over a multi-agent loop, aimed at reproducing Manus-style autonomous task completion on your own keys. |
| 4 | crewAI python | 56.5k | complex | ✅ | Role-based agents (roles, goals, backstories) in Crews; Flows add event-driven and hierarchical control for production. |
| 5 | ChatDev python | 33.9k | slightly complex | ✅ | Multi-agent software-company simulation (CEO, CTO, programmer, tester) built on chat chains with communicative dehallucination; ChatDev 2.0 continues the line. MetaGPT's conversational sibling. |
| 6 | openai-agents-python python | 28.3k | mostly simple | ✅ | Handoffs, guardrails, and multi-LLM routing; minimal surface so you own the loop. |
| 7 | Microsoft Agent Framework multi-agentworkflowpython | 12.5k | slightly complex | ✅ | Microsoft's convergence of AutoGen and Semantic Kernel: build, orchestrate, and deploy agents and multi-agent workflows in Python and .NET, with graph-based workflows and checkpointing — the designated successor harness for both lines. |
| 8 | hive multi-agentpython | 10.8k | complex | ❓ | Self-hosted multi-agent **harness** aimed at production workloads: human-in-the-loop checkpoints and a self-improving agent loop, distinct from single-session coding-agent shells. |
| 9 | PraisonAI multi-agentpython | 8.5k | mostly simple | ✅ | Autonomous multi-agent teams with a single entry point; emphasis on minimal config. |
| 10 | omnigent sandboxidepython | 8k | complex | ❓ | Open-source meta-**harness**: orchestrates Claude Code, Codex, Cursor, Pi, and custom agents behind one policy/sandboxing layer so teams swap harnesses without rewriting workflows. |
| 11 | AG2 multi-agentpython | 4.8k | complex | ❓ | AG2 (formerly AutoGen): the community-governed continuation of the original AutoGen project after Microsoft's fork diverged—conversable multi-agent groups, code execution, and human-in-the-loop under an open-source AgentOS banner. Graduated off the radar this cycle. |
| 12 | AgentRL trainingpython | 330 | complex | ✅ | Multitask, multiturn RL for LLM agents; Ray-based scaling, rollout/actor workers—for teams that want to train agents, not just run them. |