Myth2 is an implementation of a binary tree and used to run an 'interactive story'. The user traverses down the tree and at each node is given a bit of story and two options to choose which path to follow. If there is no story after the option, the user is given the chance to add to the story. It is written in PHP 4 and uses MySQL for the backend. Output is fully XHTML 1.0 Transitional compatible and fairly flexible.
Mudsbuilder is a set of tools for the creation of dungeon maps in MUDs. Once a map is created, the user has the ability to generate LPC code from that map for virtually any mudlib. It supports standard (south, north, east, etc.) exits, ups and downs, and miscellaneous exits, such as one-way exits.
psyced is a distributed chat and messaging system based on the Protocol for SYnchronous Conferencing. PSYC is multicast and routed between servers and clients in a scalable and efficient way, but users can also comfortably use IRC clients, telnet, Web chat, WAP, or Jabber to enter the network. psyced also communicates with the network of Jabber/XMPP servers and hosts programmable chat rooms for all of these technologies at once. It also provides gateways to several IRC networks, but unlike IRC, everyone can run a server and be an equal member of the PSYC network. It supports PSYC, XMPP, IRC, TELNET, HTTP, Applet, SMTP, WAP, XML, RSS, and TLS.