Javascript is one of the most popular languages in existence. MUD Client takes advantage of this, allowing scripts to be written for aliases and triggers.
A full range of ANSI colors is supported. Everything from foreground colors, background colors, underlines and even blinking text.
Being written ground up for macOS, the scripting includes support for interacting with the status bar, system notifications and the app icon badge. This allows for advanced actions such as displaying HP in the macOS status bar/app badge or allowing you send notifications when a creature has been killed.