Ubiquity Sofware has been purchased by http://www.avaya.com
The information below is likely obsolete

Ubiquity Software
http://www.ubiquitysoftware.com/

Products:

• SIP Application Server SIP Servlet container, carrier-grade, highly available platform with Service Orientated Architecture framework for developers.
• Speak Conference Director Conferencing application
• Voice Plus VoIP software
• Ubiquity Developer Studio VoIP development tools for the Eclipse IDE.

You can also download the user agent (soft-phone) from the following link:
http://www.sipcenter.com/sip.nsf/html/User+Agent+Download

The Ubiquity Developer community - Ubiquity Developer Network (UDN), provides free download of development tools and even tools to develop within the SIP Servlet container: https://developer.ubiquitysoftware.com/

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