Terminal UI
Herdr
One terminal for the whole herd
Herdr is an open-source agent multiplexer that lives in the terminal: a single ~10MB Rust binary that runs multiple AI coding agents in parallel with panes, tabs, and workspaces — similar to tmux but agent-aware. It tracks semantic agent state in a sidebar (blocked, working, done, idle) so you always know which agent needs input, and sessions persist across detach/reattach, including over SSH from a phone. A CLI and local JSON socket API let agents themselves create workspaces, split panes, spawn helpers, and subscribe to state changes.
FAQ
- Is Herdr free?
- Yes — Herdr is free and open source (AGPL-3.0).
- Which coding agents does Herdr support?
- Herdr works with Claude Code, Codex, Gemini CLI, Pi, Droid, Amp, OpenCode, Cursor, GitHub Copilot CLI, Cline and any terminal agent.
- What platforms does Herdr run on?
- Herdr runs on macOS, Linux and Windows.
- Is Herdr open source?
- Yes — Herdr is open source, licensed under AGPL-3.0.
