spymux – Spy on your tmux panes

I had motivation for writing this after I kept switching back and forth between agents to see if they've finished what they were working on (and I couldn't find a similar tool out there). I'd imagine it can be useful for other scenarios as well, e.g. tracking multiple build/test jobs over multiple windows. Still a work in progress, but I thought I'd share :)

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In plain words

Spymux is a tool that monitors tmux panes without requiring manual switching between them. It allows users to track the progress of multiple tasks running in parallel, such as agent processes, build jobs, or test runs across different windows. The tool addresses the need to check on long-running operations without constantly navigating between panes, making it useful for developers managing concurrent workloads in terminal environments.

written from the facts on this page · September 2026

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