Bombyx: Bombyx is a graphical client for SILC (Secure Internet Live Conferencing). It is written in C++ and uses FLTK as the widget set, plus a few other libraries.
Chatterbox: Voice chat software, good for online training, seminars, or communities, including text, voice chat, co-browsing and application sharing.
Comms4free: Lists only freeware or ad-ware communications software, including text chat, voice chat, and video chat. Descriptions provided.
CustomChat Inc.: Provides all the tools necessary to implement your own customizable, branded, web-based, multimedia and ecommerce enabled conference rooms on a web site.
Irssi-SILC: Irssi-SILC is the original textmode client for SILC.
Lister Smart: A sleek and useful solution that is set to change the perception of SMS as a communication tool.
Milc: A SILC Client for Windows, Linux/*BSD, and Mac OS/X. Has integrated public/private key support, OS standards interface, and HTML rendered output.
Nufan Network: The Nufan Network Website
Stealth Chat: Freeware program that includes strong encryption and stealth measures. Ideal for office workers.
Wander: By dragging the address or link in a browser to this software, you can publicly or privately talk to other users reading the same webpage.