 | SIPfoundry
An international open source community providing VoIP solutions and technology based on the SIP standard. |
 | SIPquest Inc.
Software component developer for service providers and telecom equipment vendors. |
 | Soft Front
Provides a development environment for software centered around SIP/VoIP technology. |
 | Tech Invite
Portal containing links to technical information and RFC documentation. |
 | The SIP Center
Portal with technical and market resources aimed at commercial developers. Also provides a testbed area for software and proxy development. |
 | Voice System
Design, consultancy and development for SIP Express Router (SER) servers. |
 | VoIP News
Information on available technologies and software/hardware product reviews. |
 | VoIP User
Consumer guide and forum. Also has software phone downloads and links to service providers. |
