SlashMUD X 1.0 for Mac was available to download from the developer's website when we last checked. We cannot confirm if there is a free download of this app available. We recommend checking the downloaded files with any free antivirus. SlashMUD X for Mac belongs to Games.
From the developer:
SlashMUD X is a Mac OS X-based MUD server that is currently in the final stages of development. SlashMUD is fully object-oriented, includes many unique features built-in as standard, can be hosted over any TCP/IP network (including the internet) and is freeware with full source code available.
You may want to check out more software for Mac, such as World of Warcraft Interface AddOn Kit, which might be similar to SlashMUD X.