Herdr

Herdr is an open-source terminal runtime with 45,000+ stars on GitHub — the workspace where your coding agents live, run and report back.

Overview

Developers increasingly run several coding agents at once, then lose track of them across a mess of terminal tabs. Herdr, written in Rust, is a terminal multiplexer designed for that reality: it gives every agent a managed pane and understands agent states — working, waiting for input, blocked, finished — so a single glance shows which agent needs you and which are still busy. Workspaces group related sessions, sessions persist across detach and reattach, and navigation is fully keyboard-driven in a fast TUI. Herdr works with the CLI agents you already use, such as Claude Code and Codex, treating them as first-class residents of the terminal rather than anonymous shell processes, and it is built to stay out of the way: lightweight, local and scriptable. Released under the Apache License 2.0 by herdrdev, it has grown quickly through 2026 as multi-agent coding workflows became normal.

Key Features

• Agent-aware panes – see at a glance which agents are working, waiting, blocked or done.
• Terminal multiplexing – split, arrange and navigate many sessions in one window.
• Persistent sessions – detach and reattach without losing running agents or their output.
• Workspaces – group agents and shells per project and switch contexts instantly.
• Keyboard-first Rust TUI – fast, lightweight and responsive even with many panes.
• Works with your agents – Claude Code, Codex and other CLI coding tools run unchanged.
• Local and scriptable – no cloud account; automate it from your own shell workflows.

💳 Pricing

Herdr is free and open source under the Apache License 2.0. There is no paid tier — install it and run as many agents as your machine can handle.

Who Is It For

Developers who run multiple CLI coding agents in parallel and want one calm control room for them, instead of hunting through terminal tabs to find the agent that has been waiting for input.