Open sourceSwift · ≈24k stars · MIT
Happy
Open-source desktop, mobile and CLI harness for Claude Code, Codex, Grok and Gemini sessions.
Happy is a free, MIT-licensed app that orchestrates multiple coding agents (Claude Code, Codex, Grok, Gemini via Antigravity and others) from one interface, reusing subscriptions users already pay for. It ships desktop apps for macOS, Windows and Linux, iOS and Android apps with end-to-end encrypted session sync, and an npm CLI (e.g. `happy claude`, `happy codex`) whose sessions can be resumed from a phone. A team server adds multiplayer sign-in and shared projects and sessions; tasks can be delegated to subagents.
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TypeScript · ≈393k stars · MIT
openclaw/openclaw
The viral open-source personal AI assistant that really does things.
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obra/superpowers
An agentic skills framework and software methodology that works.
Maintained by Jesse Vincent (obra)
Shell · ≈306k stars · MIT
mattpocock/skills
Small, composable agent skills for real engineering work.
Maintained by Matt Pocock (AI Hero)
Connections
Relations from the Harness Hub knowledge graph, as charted in the State of Harness reports.
Maintained by · 1
- Happy EngineeringOrganisation
Built on · 2
- Claude CodeProject
- CodexProject
Sources
Verified Oct 29, 2026