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Boo: a screen-style multiplexer built for AI agents
Week 2026-W25 ·
Coder shipped boo, a GNU screen-style terminal multiplexer that keeps your sessions alive across disconnects and is scriptable enough for AI agents to drive. It crossed 600 stars in its first week.
Boo is a terminal multiplexer like GNU screen: you start a session, detach from it, and reattach later with everything intact, even after a dropped connection. What sets it apart is the foundation — it's built on libghostty, the VT core from the Ghostty terminal, so screen state is preserved and redrawn faithfully. It's written in Zig and talks to its daemon over Unix sockets. The reason it took off is its automation story: commands like send, peek and wait let you script a session without needing a real TTY.
Why a vibe-coder should care
If you run long jobs over ssh or hand tasks to a coding agent, boo means your work survives a flaky connection and a bot can drive the terminal the same way you would. It's the kind of plumbing that quietly makes agent workflows less fragile.