Open sourcePython · ≈4.6k stars · MIT
Agency Swarm
Multi-agent orchestration on top of the OpenAI Agents SDK.
Agency Swarm is a Python framework for building multi-agent applications modeled on real organizational structures, started by Arsenii Shatokhin (VRSEN). Version 1.x extends the OpenAI Agents SDK and Responses API: agents get distinct roles, instructions and Pydantic-typed tools, communicate through a dedicated send_message tool along explicit, directional communication flows defined on the Agency, and can persist threads via callbacks. Non-OpenAI models are supported through LiteLLM.
Neighbours on the workbench
TypeScript · ≈393k stars · MIT
openclaw/openclaw
The viral open-source personal AI assistant that really does things.
Maintained by OpenClaw Foundation
TypeScript · ≈265k stars · MIT
deepseek-ai/deepseek-harness
Everything is a Plugin — DeepSeek's open agent harness.
Maintained by DeepSeek
TypeScript · ≈209k stars · Sustainable Use License (fair-code; GitHub reports NOASSERTION)
n8n-io/n8n
Fair-code workflow automation platform with native AI capabilities.
Maintained by n8n-io
Connections
Relations from the Harness Hub knowledge graph, as charted in the State of Harness reports.
Maintained by · 1
- VRSENOrganisation
Built on · 2
- LiteLLMProject
- OpenAI Agents SDKProject
Sources
Verified Oct 29, 2026