Herdr on a Mac
Agent multiplexer — tmux for AI coding agents (terminal) · Agent Platforms
Herdr (herdr.dev) is an open-source agent multiplexer: a single ~10 MB Rust binary that runs many terminal AI coding agents in parallel with panes, tabs and workspaces — tmux, but agent-aware. It tracks each agent's semantic state in a sidebar (blocked / working / done / idle) so you can see which one needs input, and sessions persist across detach/reattach — including over SSH from another machine or a phone. A CLI and a local JSON socket API let the agents themselves open workspaces, split panes and spawn helpers. Works with Claude Code, Codex, Gemini CLI, Droid, OpenCode, Aider, Copilot CLI and any terminal agent. brew install herdr (macOS/Linux; AGPL-3.0). A terminal tool — no port or web UI of its own; complements FrontierStack's Agent Sessions.
Run Herdr with FrontierStack
FrontierStack lists Herdr in its Agent Platforms catalog. Install or connect it from one place, then monitor its status, ports and certificate, secure it with the firewall and Malware Audit, and back it up.
Run it all from one Mac app.
FrontierStack installs, monitors and secures the whole stack — locally and across your fleet — from a single native macOS app.
Download FrontierStack