Apps similar to itmux include Windows Terminal, which is free and open source. Other options are tmux, Herdr, RMUX and mintty. In total there are six Terminal Emulators like itmux for Mac, Windows and Linux.
Windows Terminal is a new, modern, feature-rich, productive terminal application for command-line users. It includes many of the features most frequently requested by the Windows command-line community including support for tabs, rich text, globalization, configurability...
United States
tmux is a terminal multiplexer: it enables a number of terminals (or windows), each running a separate program, to be created, accessed, and controlled from a single screen. tmux may be detached from a screen and continue running in the background, then later reattached.
Handle multiple coding agents in real terminals with instant status tracking, persistent sessions that survive disconnects, SSH/mobile reattachment, keyboard and mouse controls, plugin support, and lightweight operation as a Rust binary for enhanced workflows.
Türkiye
Universal Rust multiplexer for the agentic era: detachable, scriptable, and inspectable, with a tmux-compatible CLI, daemon-backed SDK, and native Ratatui integration.
Mintty is a terminal emulator for Cygwin that is based on code from PuTTY 0.60 by Simon Tatham and team.
United Kingdom
A GNU screen style terminal multiplexer built on libghostty (libghostty-vt), written in Zig.
