Herdr: Why use a terminal multiplexer when Agent GUIs are already good?

Herdr：Agent GUI 已经够好，为什么还要一个终端复用器？

Herdr is a terminal multiplexer that owns PTY sessions directly, sorting multiple CLI agents into a blocked/working/done attention queue. Unlike Codex desktop, Claude Code Agent View, or floating notification widgets—which observe or wrap—Herdr owns the sessions, supports detach/reattach, and exposes CLI and Socket APIs for scripts to control panels. The post is clear: most people shouldn't switch. Single-tool users should stay with official GUIs; macOS users pay a smaller cost adding a widget; tmux/Zellij veterans can just install indicator plugins. Herdr's own state detection relies on screen parsing and is imperfect—Issue #1362 in v0.7.3 shows a sub-panel working but displayed as idle. Server restart restores layout only, not processes or conversation history. It fits only developers running 3+ cross-vendor CLI agents with the terminal as their primary execution surface.

Why it matters: Herdr addresses the real pain point of managing multiple concurrent agents, with a solid comparison of vendor GUIs, dashboards, and terminal multiplexers. But the product is still niche with no cross-source cluster, capping at 72.