herdr: Is This the Ultimate Agent Multiplexer?

• Video: herdr: Is This the Ultimate Agent Multiplexer? by Better Stack (7:10)
• Tags: agent-multiplexer terminal rust tmux

Key Points

herdr — an agent multiplexer that runs inside the terminal you already use, so you can run many coding agents side-by-side and see which is working, blocked, or done (with system notifications). Built by Oğulcan Çelik.

• One Rust binary (built with Ratatui) — no Electron, no separate app. Renders text to your terminal, so it runs anywhere your terminal does, including over SSH.
• vs tmux: tmux predates AI agents — run a harness in a tmux pane and tmux has no idea it exists or its status. herdr keeps tmux’s persistence + split panes but adds agent awareness (status) baked in.
• vs Warp: tools like Warp pull you into their terminal/workflow; herdr stays in yours.
• Socket API: agents can drive herdr themselves.
• Install: Brew, curl, or a Nix flake. Default prefix is Ctrl-B (tmux-like, remappable); Shift+N creates a workspace.

Related

• karpathy-second-brain-ai-os — agent orchestration concepts
• context-v15 — multi-agent context management
• spectrum-of-agentic-coding — agentic coding landscape