Browse free open source Agent Harnesses and projects for Linux below. Use the toggles on the left to filter open source Agent Harnesses by OS, license, language, programming language, and project status.
Your own personal AI assistant. Any OS. Any Platform.
Workspace to find, build, and collaborate with AI agents
AI agent toolkit: coding agent CLI, unified LLM API, TUI & web UI
The one and only agent harness for complex codebases
AI agent harness for AI coding agents
Harness LLMs with Multi-Agent Programming
The best agent harness
Agent harness to make your slop code well-engineered and beautiful
Python framework for AI workflows and pipelines with chain of thought
LLM powered fuzzing via OSS-Fuzz
Portable multi-agent harness for .agents-based skills, workflows
JS-native framework for building and managing multi-agent systems
Secure The Unknown
Self-healing browser harness that enables LLMs to complete any task
Excalibur is a highly opinionated agent harness
GUI Exploration Lab. One of the best GUI agent solutions
Ultra Recipe for Training Long-Horizon Search Agents
Symphony turns work into isolated, autonomous implementation runs
Superplan is a CLI-first execution system.