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.
AI agent toolkit: coding agent CLI, unified LLM API, TUI & web UI
Your own personal AI assistant. Any OS. Any Platform.
DeepSeek Harness: Everything is a Plugin
AI agent harness for AI coding agents
Workspace to find, build, and collaborate with AI agents
The best agent harness
Harness LLMs with Multi-Agent Programming
Ultra Recipe for Training Long-Horizon Search Agents
OpenClaw harness and fleet manager.
The one and only agent harness for complex codebases
Symphony turns work into isolated, autonomous implementation runs
Secure The Unknown
The batteries-included agent harness
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
JS-native framework for building and managing multi-agent systems
LLM powered fuzzing via OSS-Fuzz
Portable multi-agent harness for .agents-based skills, workflows
Superplan is a CLI-first execution system.