List of clients supporting or planning to support the MSRP relay extension.
- Blink from http://icanblink.com (supports relay extension)
- SIP SIMPLE client library from http://sipsimpleclient.org (supports relay extension)
- Java SDK http://msrp.java.net/
- C++ OPAL SDK from http://www.opalvoip.org (roadmap)
- SIP Communicator from http://sip-communicator.org (roadmap)
- Mercuro - fully featured IMS client from http://www.mercuro.net (MSRP but no relay support yet)
- Radvision MSRP Client Developer Solution from http://radvision.com (supports relay extension)
There may be others but things in this realm are changing fast so do not rely on this list to be up to date.