Superlogical introduces Rex terminal multiplexer

The author argues that Rex, a new terminal multiplexer from Superlogical created by Mitchell Hashimoto, is a foundational primitive for modern terminal workflows and agent management. Unlike traditional multiplexers like TMUX that use compositing and act as a middleman, Rex uses a mirroring architecture powered by the Ghosty terminal engine library to send raw output directly to compliant clients. The author contends that focusing purely on the multiplexer as a core primitive provides better stability and extensibility than tools trying to build all-in-one agent workspaces. Open article →