Tinymud

This is the Maas-Neotek Robot, sixth experimental version, designed for TinyMUD, with conversation-mode extension. Platforms: Mac, BSD, Linux

TinyMUSH 3 project is a descendant of the TinyMUD server, and thus supports multi-user communication in a text-based "virtual world" format, via TCP/IP connections (presumably, but not necessarily, Internet connections). The end result looks much like text adventures games of the mid-1980s.... Platforms: *nix

PennMUSH is a MUD server that is often used for running social or role-playing games, with an extensive internal programming language. A mud ("multi-user dungeon") is a form of textual virtual reality program. A mud server is a computer program which maintains a world database containing... Platforms: *nix

T33nyMUD. A TinyMUD compatible mud server, with options for just how old school you want it. No posing? Noisy whisper? You got it! Platforms: Mac, BSD, Linux

A multi-user user-extensible environment for exercising chatting and creative skills. Derived from TinyMUD 1.4.1 beta. Code active since Jan 30, 1990. The development site is online at telnet:uglymug.org.uk:6239 Platforms: Mac, BSD, Solaris, Linux

PerlMUD is a MultiUser Dimension (MUD), a text-based environment that allows multiple users to converse, explore, and interact. PerlMUD is written in Perl 5 and is highly compatible with the well-known TinyMUD command set, which provides a friendly interface to your online environment.PerlMUD is... Platforms: CGI and Perl