mosh

Mosh (mobile shell) is a replacement for interactive SSH that provides a better user experience when working over unreliable, high-latency, or roaming network connections. Unlike SSH, which transmits a byte stream, Mosh maintains a snapshot of the current screen state on both client and server, synchronizing only the state changes that matter. This enables features like automatic roaming between networks, connection persistence across sleep/wake cycles, and intelligent local echo that predicts keystrokes.

The key innovation of Mosh is its predictive model: the client runs a local replica of the server's behavior and tries to guess how each keystroke will affect the screen, displaying predictions while waiting for confirmation from the server. This makes interactions feel instantaneous even over high-latency connections. Mosh automatically reconnects when network service is restored, and warns you if your connection drops, making it ideal for mobile devices and unreliable networks.

Mosh is available for GNU/Linux, BSD, macOS, Solaris, Android, Chrome, and iOS.