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herdr review

herdr is an open source terminal runtime for coding agents that keeps their sessions running in a background server and shows each agent's status.

Updated Nov 1, 2026. Review written Nov 1, 2026 from the project's own sources; usage data refreshed every Monday.

TL;DR

herdr is a terminal multiplexer built for coding agents such as Claude Code, Codex, Cursor and OpenCode. herdr is for developers who run several agents at once, locally or over SSH. herdr marks each pane as working, blocked or idle, keeps terminals alive after you detach, and lets agents drive it through a CLI and socket API.

herdr at a glance

Category
Coding agents
Maintained by
herdrdev (organization, @herdrdev on GitHub)
License
Apache 2.0
Language
Rust, Python, PowerShell
Repository
github.com/herdrdev/herdr
Website
herdr.dev
Latest release
v0.9.5 on GitHub, Oct 14, 2026
First published
Mar 27, 2026

What herdr does

  • herdr keeps terminals running in a background server when you close the client or lose your SSH connection.
  • herdr marks every pane as working, blocked or idle, and tells you when an agent stops and needs an answer.
  • herdr shows local work and saved SSH machines together, with a combined agent list and independent reconnects.
  • herdr lets agents spawn panes, prompt each other and wait until another agent is blocked, through its CLI and socket API.
  • herdr supports tmux-style prefix keys alongside mouse click, drag and split.
  • herdr supports plugins that extend panes and workflows, and `herdr plugin update` updates plugins installed from GitHub.
  • herdr restores the saved layout after a server or machine restart and can resume supported agent sessions.

How it works

herdr is a single Rust binary that runs in your existing terminal. You start it with `herdr` where the work lives, then run agents in split panes. A background server keeps the terminals alive, so you can detach with `ctrl+b q` and reattach by running `herdr` again. herdr does not wrap or replace your agents. It owns their terminals. Agents can control herdr through its CLI and socket API.

How to install and start using herdr

With the install script

curl -fsSL https://herdr.dev/install.sh | sh

With Homebrew

brew install herdr

On Windows

powershell -ExecutionPolicy Bypass -c "irm https://herdr.dev/install.ps1 | iex"

Requirements

  • herdr runs on macOS, Linux and Windows. Windows also has a separate guide for endpoint-protected machines.
  • herdr needs SSH access to any remote machine you want to connect.

First steps

  1. Run `herdr` in the directory where your work lives.
  2. Start your agents, such as Claude Code or Codex, and split panes as needed.
  3. Press `ctrl+b q` to detach. The agents keep running in the background server.
  4. Run `herdr` again to reattach to your running sessions.

Who herdr is for

  • Developers who run several coding agents in parallel and need to see which one is blocked.
  • Developers who run agents on remote servers over SSH and want them to survive disconnects.
  • Developers building agents that orchestrate other agents through a CLI or socket API.
  • Developers who want tmux-style keys plus mouse support, without an Electron app.

Limitations to know

  • herdr restores layouts after a server or machine restart, but the original processes do not survive.
  • herdr can resume only supported agent sessions after a restart.
  • herdr detects whether Codex is working from the screen, because it no longer installs Codex turn hooks.
  • An elevated Windows herdr server accepts only administrator clients by default.

Is herdr growing? Usage data

In the week of Oct 25–31, 2026, herdr ranked #23 on the Devtoolwatch Board and #12 in Coding agents, with a momentum score of 87 out of 100. It drew 365 Hacker News points that week.

New GitHub stars per week for herdr12 weeks from Aug 9, 2026: 3.5k, 2.1k, 1.8k, 2.1k, 2.5k, 1.7k, 1.2k, 1.3k, 1.2k, 1.3k, 1.2k, 1.5k new stars, an average of 1.8k a week.Aug 9week of Oct 25
New GitHub stars per week for the last 12 weeks, from GitHub's stargazer history (today's stargazers by the week they starred).
Show the weekly numbers
New GitHub stars per week for herdr
Week ofNew stars
Aug 9, 20263.5k
Aug 16, 20262.1k
Aug 23, 20261.8k
Aug 30, 20262.1k
Sep 6, 20262.5k
Sep 13, 20261.7k
Sep 20, 20261.2k
Sep 27, 20261.3k
Oct 4, 20261.2k
Oct 11, 20261.3k
Oct 18, 20261.2k
Oct 25, 20261.5k

On Hacker News

The Board ranks tools by four signals each week: new stars, new stars for the repo's size, added downloads and download growth beyond the market. How the ranking works.

herdr alternatives

Other AI coding agents on the Board in the week of Oct 25–31, 2026, by momentum:

Coding agents ranked by momentum, the week of Oct 25–31, 2026
RankToolStarsDownloads/wk
#1CindyCindy is an open-source AI agent app for desktop and mobile that combines Claude Code, Codex and Pi across your connected devices.8.8k–
#2OpenMausBotOpenMausBot is an open-source desktop chat app where each contact is a local Claude, Codex, or Grok CLI agent with its own computer.9.6k–
#3OrcaOrca is a desktop agent development environment for running Claude Code, Codex, and other CLI coding agents in parallel, each in its own…111.7k–
#4OpenBotOpenBot is an open-source, self-hosted template for AI coworkers that each get their own browser, files and granted tools, with every…9.1k–
#5Agent ReachAgent Reach is a Python CLI that lets AI agents search and read platforms such as Twitter, Reddit, YouTube, GitHub, Bilibili and…107.2k–
#6Skill RecorderSkill Recorder is a desktop app that records your on-screen work session and turns it into a reusable agent Skill or Automation.5.6k–

All AI coding agents, ranked

Recent herdr releases

herdr FAQ

Is herdr free and open source?

Yes. herdr's source code is on GitHub (herdrdev/herdr) under the Apache 2.0 license, so you can use it for free.

How do I install herdr?

Run curl -fsSL https://herdr.dev/install.sh | sh. The install section above has the other options from the project's README.

Is herdr still maintained?

Yes. The herdrdev/herdr repository was last updated on Nov 1, 2026, and the latest release, v0.9.5 on GitHub, came out on Oct 14, 2026.

How popular is herdr?

herdr has 47.1k GitHub stars as of Nov 1, 2026. It gained 1.5k new stars in the week of Oct 25–31, 2026, against a 12-week average of 1.8k a week. That made it #12 among AI coding agents on the Devtoolwatch Board.

herdr vs Orca: how do they compare?

herdr and Orca are both tracked by Devtoolwatch as AI coding agents. herdr has 47.1k GitHub stars and Orca has 111.7k. Orca is a desktop agent development environment for running Claude Code, Codex, and other CLI coding agents in parallel, each in its own git worktree. Orca review.

herdr vs OpenCode: how do they compare?

herdr and OpenCode are both tracked by Devtoolwatch as AI coding agents. herdr has 47.1k GitHub stars and OpenCode has 223.6k. OpenCode is an open source AI coding agent that helps you write and run code in a terminal, desktop app, or IDE extension. OpenCode review.

What are the best alternatives to herdr?

Other AI coding agents on the Devtoolwatch Board in the week of Oct 25–31, 2026, by momentum: Cindy (#1), OpenMausBot (#2), Orca (#3), OpenBot (#4), Agent Reach (#5). The alternatives table above has their numbers.

How do I use herdr with Claude Code?

Run herdr, then start Claude Code in a pane as you normally would. herdr does not wrap or replace Claude Code. It owns the terminal and shows whether the agent is working, blocked or idle.

Does herdr run on Windows?

herdr runs on Windows. You install it with a PowerShell script, and there is a separate guide for endpoint-protected Windows. Windows notifications stay in Notification Center, and clicking one jumps to its pane.

How do I use herdr with remote machines?

herdr connects to saved SSH machines and shows them in the same window as local work, with a combined agent list. Agents on a remote machine keep running there while your laptop sleeps or the app is closed.

Sources

  1. herdrdev/herdr on GitHub
  2. herdr README
  3. herdr website
  4. Release v0.9.5 (Oct 14, 2026)
  5. Release preview-2026-10-14-fbd2ae23927f (Oct 14, 2026)
  6. Release v0.9.4 (Oct 13, 2026)
  7. Hacker News: Herdr: One terminal to rule them all
  8. Hacker News: Herdr has released native app
  9. Hacker News: Herdr is joining Y Combinator. The runtime stays open
  10. Devtoolwatch Board, the week of Oct 25–31, 2026

herdr README badge

Maintainers can show the tool's weekly Board rank in their README:

Devtoolwatch badge for herdr

[![Devtoolwatch](https://index.devtoolwatch.com/badge/herdrdev-herdr.svg)](https://index.devtoolwatch.com/tools/herdrdev-herdr/)

How this page is made: Devtoolwatch writes each review from the project's README, releases, package metadata and website, with an AI model, then checks every claim against the source it cites and drops what the sources don't support. The numbers come from Devtoolwatch's daily GitHub snapshots, GitHub's stargazer history, and the npm and PyPI download APIs. Spotted an error? Email [email protected].