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.
The open harness for creative work
DeepSeek Harness: Everything is a Plugin
Better DSH desktop, zero environment setup, preset plugins
Z.ai's coding agent harness. Powerful, intelligent, extensible
AI agent toolkit: coding agent CLI, unified LLM API, TUI & web UI
Workspace to find, build, and collaborate with AI agents
Symphony turns work into isolated, autonomous implementation runs
AI agent harness for AI coding agents
Your own personal AI assistant. Any OS. Any Platform.
Portable multi-agent harness for .agents-based skills, workflows
Agent harness to make your slop code well-engineered and beautiful
Self-evolving multi-agent ecosystem for all-domain collaboration
The best agent harness
Self-healing browser harness that enables LLMs to complete any task
The batteries-included agent harness
Excalibur is a highly opinionated agent harness
Free desktop app for Claude Code, Codex and OpenCode
FrontierAgent, our agent framework, open-sourced alongside it
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
The one and only agent harness for complex codebases
Secure The Unknown