Comms4free  
   Lists only freeware or ad-ware communications software, including text chat, voice chat, and video chat. Descriptions provided.
   http://comms4free.webz.cz

Stealth Chat  
   Freeware program that includes strong encryption and stealth measures. Ideal for office workers.
   http://www.geocities.com/justnevergo

Menis Software  
   Developer of Invisible Chat a user-friendly real-time chat application. Product specifications, screenshots, and trial download. [Shareware]
   http://www.mentis.com.ua/

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.
   http://www.customchat.com/

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.
   http://milc.sourceforge.net/

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.
   http://www.smiletiger.com/

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.
   http://bombyx.sourceforge.net/

Irssi-SILC  
   Irssi-SILC is the original textmode client for SILC.
   http://www.silcnet.org/

Nufan Network  
   The Nufan Network Website
   http://www.nufan.nl

Lister Smart  
   A sleek and useful solution that is set to change the perception of SMS as a communication tool.
   http://listersmartsms.tripod.com/ListerSmartSMS/

Chatterbox  
   Voice chat software, good for online training, seminars, or communities, including text, voice chat, co-browsing and application sharing.
   http://www.howudodat.com