Metacosm is a framework for computer role playing games in Java. An example called ZHeroeZ is also provided. Some of the project's objectives are object oriented design, world persistency (all actions should have a long term impact on the world), coherent time management (time is the same for everybody in the same world), a graphical editor, and choice in client user interface. All creatures can be player or AI controlled by design.
Multi-User Environment Server (MUES) is a multi-threaded, event-driven Internet game environment server written in Ruby. It is intended to facilitate the building of online multi-player games or simulations, by providing one or more dynamically programmed object environments (worlds), the means to access these environments (using a network client), various useful services or daemons (for creating in-game systems), and an event system (for facilitating the interaction of all the parts).
JamochaMUD offers Unicode, plug-in, and multi-language support (8 different languages) to allow a more enjoyable MUCKing/MUDding experience. It features command history, synchronized window controls, experimental SOCKS 5 support, and greatly improved ANSI colour support. It plays nice on Unix systems, supports a wide range of MU*s, and also includes emulation of some TinyFugue editor controls. JamochaMUD includes classes that may be easily reused in other Java applications.
Twisted is an event-based framework for Internet applications. It includes a Web server, an SMTP/POP3 server, a telnet server, an SSH server, an IRC server, a DNS server, a generic client/server pair for remote object access (Perspective Broker), and APIs for creating new protocols. It supports integration with GTK+, GTK+ 2, Qt, Tkinter, wxPython, Mac OS X (PyObjC) and Win32 event loops. It also supports TCP, SSL and TLS, UDP, Unix sockets, multicast, and serial ports. Supported protocols include HTTP, FTP, SMTP, POP3, IMAP, TOC, OSCAR (AIM and ICQ), SSH, DNS, IRC, NNTP, Jabber, SOCKSv4, Telnet, SIP (for VoIP), and XML-RPC and SOAP using external packages. Most protocols are supported as both servers and clients.