The EQEMU project is an attempt to recreate the Everquest server software, runnable from a Windows or Linux machine. Content is stored in a MySQL database, and allows you to create custom creatures, items, and quest content in game. Many in-game functions are supported, and functionality is expanded week by week by a very active development group and by the support of the user community.
Tinyfugue is a very popular MUD/MUSH command line client rich in functionality. When using tinyfugue in a graphical environment the only thing it lacks is the peripheral buttons and options that are available to graphical clients. Gtinyfugue aims to embed tinyfugue within a GNOME wrapper that provides the GUI widgets that make tinyfugue easier and more comfortable to use on a day-to-day basis. Embedding tinyfugue rather than using simple telnet gives the gtinyfugue user the advantage of the depth of tinyfugue functionality.
SACRED is an enhanced version of the ROM 2.4b6 codebase. The enhancements include new player skills, spells, classes, and races. Also included are arenas, OLC, Mud Compression Protocol, a Clan system, new flags, questing, color, automatic auctions, enhanced immortal utilities, spellchecking, hints, and many more features.