ZWM is an SDL-based window manager and widget library intended to be used in cross-platform applications. It features basic widgets like buttons, lists, containers, a file browser, combo-box, and many more. It also features support for mutimedia playback (MPEG, MP3, WAV, MIDI, Ogg, etc.).
IRK is a Tcl IRC client library. IRK is intended for Tcl programmers that want to use the IRC protocol for communication. It can be used to ease the creation of IRC "bots", to serve as the basis for graphical chat clients, and to allow IRKs to find each other without centralized coordination by meeting on a designated IRC server and channel. This last feature makes it ideal for negotiating the initial contact of P2P programs without requiring a central registry or server.
The Interverse is the evolution and combination of the Web, chat, instant messaging (IM), and voice communication. It is not just a graphical user interface (GUI), but an immersive user interface (IUI). The Interverse is a virtual universe running on top of the Internet. It uses the Crystal Space 3D engine to render the user's view of the world.
liblookdb is a C++ library that provides an interface to several common Database Management Systems. It enables the programmer to write application code that can be built and run unchanged on a variety of platforms and against several DBMSs. It is currently in use in production code on Win32, GNU/Linux, and Compaq Tru64 UNIX, and against Ingres II (and older versions), Oracle 8i, PostgreSQL, and ODBC (on Win32 only at present). An application can choose which DBMS interface layer to load at runtime.