Rmux – A programmable terminal multiplexer with a Playwright-style SDK

Rmux is a terminal multiplexer rebuilt from scratch in Rust, offering a tmux-compatible CLI alongside a programmable Playwright-style SDK for precise, reliable automation. It’s designed for developers who are frustrated with scraping terminal output using grep and sleep-based scripts, enabling them to programmatically control and inspect terminal sessions without fragile workarounds. The project is interesting because it reimagines a classic devtool with a modern, type-safe API layer, making terminal automation as robust and expressive as browser automation.