Browse free open source Agent Harnesses and projects for Mac 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.
AI agent harness for AI coding agents
AI agent toolkit: coding agent CLI, unified LLM API, TUI & web UI
The one and only agent harness for complex codebases
Workspace to find, build, and collaborate with AI agents
The best agent harness
Portable multi-agent harness for .agents-based skills, workflows
OpenClaw harness and fleet manager.
Agent harness to make your slop code well-engineered and beautiful
Excalibur is a highly opinionated agent harness
GUI Exploration Lab. One of the best GUI agent solutions
Python framework for AI workflows and pipelines with chain of thought
Ultra Recipe for Training Long-Horizon Search Agents
JS-native framework for building and managing multi-agent systems
Harness LLMs with Multi-Agent Programming
Secure The Unknown
LLM powered fuzzing via OSS-Fuzz
Symphony turns work into isolated, autonomous implementation runs
Superplan is a CLI-first execution system.