SIP and RTP Stack

Note: I only searched for C/C++ stacks and applications. There also exist a lot of stacks and applications for other programming languages, especially for java. If you are looking for Java stacks/applications, please ask Google. If you have any comments or interesting links, or do you want to report broken links, please contact me

RTP Stacks (mainly open source C/C++ stacks)

SIP Stacks

RTP Applications

SIP Phone (User Agent, Softphone, Proxy)

SIP Test Utility

SIP Applications (Proxy, Location Server)

Commercial SIP Stacks