# Herdr

> **TL;DR.** Herdr is a terminal-native multiplexer built specifically for running multiple AI coding agents at once — Claude Code, Codex, Cursor, and a dozen others — each in its own real PTY pane with automatic blocked/working/done/idle status, so a developer stops tabbing through terminals to find out which agent needs them.

- **Category:** AI / Developer Tools / Terminal Infrastructure
- **Stage:** rising
- **Age:** 98 days
- **Origin date:** 2026-03-27
- **First detected:** 2026-07-02
- **Canonical URL:** https://earlyterms.com/term/herdr
- **Sources:** 7 primary URLs

## Definition

Herdr is a terminal-native multiplexer built specifically for running multiple AI coding agents at once — Claude Code, Codex, Cursor, and a dozen others — each in its own real PTY pane with automatic blocked/working/done/idle status, so a developer stops tabbing through terminals to find out which agent needs them.

Ogulcan Celik shipped [v0.1.0 on March 27, 2026](https://github.com/ogulcancelik/herdr) as a small Rust binary, and by June 29 its [Hacker News launch](https://news.ycombinator.com/item?id=48714802) drew 164 points and 105 comments, pushing the ~10MB tool past 10,000 GitHub stars, to #1 trending on GitHub, and toward a fast-forming third-party plugin ecosystem within three months.

## Analogy

Think of it as tmux that actually knows which of your agents is stuck versus which one just finished.

## Why it's emerging now

Herdr crossed 10,000 GitHub stars and hit #1 trending after a 164-point, 105-comment Hacker News launch on June 29, 2026, as developers juggling Claude Code, Codex, and Cursor sessions in parallel started wanting a dedicated agent-state dashboard instead of plain tmux.

## Related terms

- *competitor:* tmux
- *competitor:* conductor.build
- *competitor:* cmux
- *competitor:* intelligent-terminal
- *related:* agent-harness
- *parent:* parallel-agents
- *related:* remote-workspaces
- *related:* claude-code
- *related:* openai-codex-cli
- *related:* cursor-cli

## Sources

1. [Herdr — GitHub repo (ogulcancelik/herdr)](https://github.com/ogulcancelik/herdr)
2. [Herdr — official site](https://herdr.dev/)
3. [Herdr vs tmux/Conductor/cmux comparison](https://herdr.dev/compare/)
4. [Hacker News: Herdr agent multiplexer launch thread](https://news.ycombinator.com/item?id=48714802)
5. [Mervin Praison: Herdr Explained](https://mer.vin/2026/07/herdr-explained-terminal-multiplexer-for-running-multiple-ai-coding-agents/)
6. [Kazuph's Yak Shaving Blog: switching from tmux to Herdr (Japanese)](https://kazuph.github.io/blog/2026/05/28/tmux-herdr-agent-multiplexer/)
7. [herdr-plus: first third-party Herdr plugin](https://github.com/cloudmanic/herdr-plus)

---
_Generated by EarlyTerms · https://earlyterms.com/term/herdr_