Cmux Terminal Multiplexer

This is a terminal multiplexer purpose-built for AI agents that need to orchestrate multiple processes and browser sessions simultaneously. It lets Claude spawn terminal splits, send commands, capture output, and run full Playwright-equivalent browser automation through a CLI socket API, all without stealing focus from your main shell. The snapshot-based element references are smarter than CSS selectors since they survive minor DOM changes, and the sidebar status reporting means you can actually see what parallel agents are doing. If you're building workflows where Claude needs to run tests in one pane while scraping docs in a browser and tailing logs in another, this gives you the primitives to do it cleanly. Built by the ara.so team.