70% Savings on Blackfin Processor Development Tools
For a limited time, you can purchase a Blackfin development tools bundle at a 70% savings. The bundle includes VisualDSP++ Development Software for Blackfin and the High Performance USB-based Emulator. Click here for purchasing details.

Mocana NanoSSL - Embedded SSL/TLS Client and Server

freeware    

OpenH323 Gatekeeper - The GNU Gatekeeper
The OpenH323 Gatekeeper is a full featured H.323 gatekeeper, available freely under GPL license. It is based on the OpenH323 H.323 stack. Both components together form the basis for a free IP telephony system.
preview: http://www.gnugk.org  

demo    

VoIP Demo
* VoiceEngineTM Demo - VoiceEngine PC/PPC is a comprehensive, packaged solution specifically designed for PC or PDA applications. * GIPS VoIP Test Tools - The GIPS IP Network Simulator is a software tool that allows the user to emulate network behavior by delaying and/or dropping packets in an IP-network; and the GIPS IP WorkBench is a software tool developed for evaluating VoIP networks.* Web Based Demo
preview: http://www.globalipsound.com