RTP Stacks

    * jrtplib: A very nice, simple C++ RTP stack. Works on Windows, Linux.... ; License: 
Free; Homepage: http://lumumba.luc.ac.be/jori/jrtplib/jrtplib.html. This stack is not 
symmetrical, but you can use my version of rtpconnection.cpp (for jrtp version 2.8) to make 
it symmetrical. (send RTP and receive RTP on the same port, send RTCP and receive RTCP on 
the same port).
    * Common Multimedia Library: from UCL London, includes RTP stack; C; License: Free; 
Homepage: http://www-mice.cs.ucl.ac.uk/multimedia/software/common/
    * ortp: C; License: LGPL; Homepage: http://www.linphone.org/ortp/; without RTCP, from 
linphone
    * GNU ccRTP: C++; License: GPL (with linking exception); Homepage: 
http://www.gnu.org/software/ccrtp/
    * LIVE.COM Streaming Media: C++; License: LGPL; Homepage: http://live.com/liveMedia/
    * Morgan RTP DirectShow Filters: C++; License: ?; Homepage: 
http://www.morgan-multimedia.com/RTP/; based on liveMedia library

    * RTP from vovida.org: C++; License: VOCAL; Homepage: 
http://www.vovida.org/protocols/downloads/rtp/
    * RTPlib: RTP library from Lucent Technologies/Cloumbia University; C; License: 
Non-exklusive source code license; Homepage: http://www-out.bell-labs.com/project/RTPlib/
    * librtp: C; License: GPL; Homepage: 
http://gphone.sourceforge.net/template.php3?page=librtp; from Gnome-o-phone
    * Microsoft RTC API: The Mircosoft RTC API is a high level SIP and RTP Stack. It's 
included in Windows XP and also comes with the several Windows Messenger. Version 1.2 
introduced a lot of new features is behaves strange when used with other SIP clients. 
Developer Homepage: 
http://www.microsoft.com/downloads/details.aspx?FamilyID=ae0bdc75-9f2f-4217-b97f-dfa0adf264aa&displaylang=en.
    * sipXmediaLib: Part of pingtel's open source releases for VoIP. License: LGPL; 
Homepage: sipfoundry.org.
    * PJMEDIA: Small RTP/RTCP stack. License: LGPL; 
Homepage:http://www.pjsip.org/pjmedia/docs/html/index.htm.

    * Zfone: Zfone is an extension to any SIP phone. It implements the ZRTP protocol for 
secure media streams. This is done by intercepting the media stream from the SIP phone and 
adding the ZRTP extension. The included ZRTP library can also be used to implement native 
ZRTP support. Homepage:http://www.philzimmermann.com/EN/zfone/index.html.