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Show HN: I built speedmux, a libghostty-powered terminal multiplexer

4 points| n89nanda | 1 day ago |github.com

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n89nanda|1 day ago

I built speedmux to make parallel agent workflows manageable from one terminal interface.

At a high level, the architecture is:

1. one terminal multiplexer process managing multiple concurrent sessions 2. per-session isolation so each agent/task can run independently 3. a persistent sidebar that tracks session state/activity without switching context 4. rendering/performance path powered by libghostty, which keeps interaction latency low even with multiple active sessions

It’s written in Go, and a lot of it was vibe-coded with Codex.