Hang4r: Run Claude Code, Codex, Cursor in Parallel
Hang4r is a free macOS app that runs Claude Code, Codex, and Cursor coding agents side by side, each isolated in its own git worktree with per-turn checkpoints and inline diff review.
Juggler: A Visual Workbench for AI Coding Agents
Juggler is a new open-source coding agent from JUCE creator Julian Storer that replaces the terminal with a visual, branching workbench for AI coding sessions.