Herdr is no longer just an Agent version of tmux: the new desktop client allows AI to modify the interface and features itself.

Beating AI News Flash: Herdr was originally a terminal manager designed specifically for AI programming tools, essentially tmux for Agents. Developers can run multiple Claude Code and Codex instances simultaneously, view task progress, and have Agents assign work to each other and wait for results. Even if the terminal window is closed, background tasks continue to run.

Now Herdr has launched two open-source projects: the all-new herdr-core runtime, and a native desktop application built on it.

herdr-core redevelops the background capabilities originally integrated into the terminal tool as an independent service and provides standardized interfaces. Developers can use it directly to run and schedule Agents, and can also build their own desktop or mobile applications with it, without having to adapt around the original TUI architecture.

It also adds an independent terminal-holding process. As long as this process is still running, even if Core itself crashes or upgrades, tasks in progress will not be interrupted.

The accompanying desktop application opens up interface layouts, shortcuts, and functional panels as modifiable local files. For example, if you want to place Agents awaiting approval together on the right side, or add a running timer to each task, you only need to tell Codex, and it can modify the corresponding layout or JavaScript files. After saving, the interface updates automatically, with no need to recompile the software.

The old Herdr TUI will continue to be maintained, and for now it does not share running tasks with the new Core. All three projects use the Apache 2.0 open-source license.