Open source harness-engineering projects
Every project in the registry tagged harness-engineering, 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
Your Personal AI Assistant; easy to install, deploy on your own machine or on the cloud; supports multiple chat apps with easily extensible capabilities.
A local multi-agent harness that works with your existing Claude Code, Codex subscriptions, allows you to run an office of agents
The Context Layer for unstructured data: typed, versioned datasets over S3, GCS, Azure
Related tags
Frequently asked questions
How many open source harness-engineering projects are there?
This registry tracks 4 projects tagged harness-engineering, with 136,277 GitHub stars between them. The most-adopted is ragflow at 90,889 stars.
Are these harness-engineering projects free to use?
Yes — 4 of the 4 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 harness-engineering 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 harness-engineering projects still maintained?
4 of the 4 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.