A universal instant messaging (IM) program
See https://pidgin.im/about/ for more information. Pidgin is an instant messaging program which lets you log in to accounts on multiple chat networks simultaneously. It runs on Windows, Linux, and other UNIX operating systems. Pidgin is compatible with the following chat networks out of the box: AIM, ICQ, Google Talk, Jabber/XMPP, MSN Messenger, Yahoo!, Bonjour, Gadu-Gadu, IRC, MXit, Novell GroupWise Messenger, Lotus Sametime, SILC, SIMPLE, MySpaceIM, and Zephyr. It is written in C and makes heavy use of GLib and GTK+. Finch is a command line instant messaging program. It also lets you log in to accounts on multiple chat network simultaneously, and it is compatible with the same chat networks as Pidgin. It is written in C and makes heavy use of GLib and ncurses.
A cross-platform GUI library
wxWidgets is a C++ library that lets developers create applications for Windows, Mac OS X, Linux and other platforms with a single code base. It has popular language bindings for Python, Perl, Ruby and many other languages, and unlike other cross-platform toolkits, wxWidgets gives applications a truly native look and feel because it uses the platform's native API rather than emulating the GUI. It's also extensive, free, open-source and mature.
ThinTUX is a small Linux distribution for thin clients. It has support for all major remote access protocols. The distribution can be booted from the network. The configuration is stored on a DHCP server to simplify terminal management.
Internet Abuse Tracker(c) aka IA Tracker(c) is a companion project for SecurityStalker(c), developed by the same group. This software will track/analyze and report to users/admins of Internet abuse associated network/email activity and take action.
mIRC Direct Connect (mDC) is a filesharing addon for mIRC and uses the Direct Connect application protocol (it works like direct connect!!). It works with mIRC32 v5.91 and above (also req. IE 4.x and above).