In the long-standing tradition of MU*s, MUTE stands for Multi-User Text Empire/Environment. We have coined this term for MU*s that are accessed via a modern web browser and may include non-command line features such as buttons, links, and other forms of input (e.g. forms).
WinterMUTE is a browser-based MU* built with Node.
The intent is to return the joy of text-based virtual worlds and communal universe-building to the people through the use of modern tools. WinterMUTE should feel familiar to anyone who has Telnetted into a MU* but quickly grasped by anyone through the use of "command palettes" (buttons that invoke commands), input forms to replace multiple prompts for long arguments, and some version control.
A prototype is currently live at wintermute.herokuapp.com.