Open source agent-harness projects
Every project in the registry tagged agent-harness, ranked by real GitHub adoption.
RAGFlow is a leading open-source Retrieval-Augmented Generation (RAG) engine that fuses cutting-edge RAG with Agent capabilities to create a superior context la
Manage, build, and run AI agent teams around the clock
Chat with your documents using any LLM, fully private
Your Personal AI Assistant; easy to install, deploy on your own machine or on the cloud; supports multiple chat apps with easily extensible capabilities.
Long-horizon agent control plane for durable, governed work across Codex, Claude Code, and other harnesses.
Knowhere extracts, parses, and outputs structured chunks ready for AI Agents and RAG.
The context orchestration layer powered by hypergraphs. Build a unified semantic context layer where agentic outcomes are deterministic and agent behavior is no
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Frequently asked questions
How many open source agent-harness projects are there?
This registry tracks 7 projects tagged agent-harness, with 286,591 GitHub stars between them. The most-adopted is ragflow at 90,889 stars.
Are these agent-harness projects free to use?
Yes — 6 of the 7 carry an explicit open-source licence across 2 distinct licences, so there is no licence fee. Where a project also sells a hosted or enterprise version, the self-hosted path remains free.
Which agent-harness project should I choose?
The list above is ranked by GitHub stars, but stars measure attention rather than fit. Check three things on each card: the licence (permissive versus copyleft), the language it is written in, and the last-push date — a high-star project that has not been pushed in a year is a liability.
Are these agent-harness projects still maintained?
7 of the 7 were pushed in the last 90 days, and every card shows its exact last-push date so you can see the rest. Sort your shortlist by that date before committing to a migration.