There are a number of flavors of MUSH server freely available to those who want to run their own MUSHes: TinyMUSH 3.0, TinyMUSH 2.2, TinyMUX 1.6, and PennMUSH 1.7.x. TinyMUSH uses a disk-based database, while PennMUSH keeps its database in the computer's memory (TinyMUX can do either). This makes PennMUSH suitable for computers which have plenty of memory or little disk space. From a user standpoint they offer many similar features and a very similar command parser.

WWW: https://www.pennmush.org/
