Mumble (open source voice chat)
It would be sweet if a voice chat program like TeamSpeak or Ventrilo was ported to DS, but since they aren't open source and obviously don't want to release any source code, that's not an option.
There's another program which I've grown to love that is very similar, I actually think it's better in almost every aspect. It's called Mumble, and it's open source (revised BSD license) so I'm assuming it should be relatively easy to port with minimal loss of features.
VoIP has been proven to work great with SvSIP, so I don't see why this wouldn't work just as good if not better.
I'm certain the developer would be delighted if someone ported it to DS. He is very passionate about the project and the community around it.
http://mumble.sourceforge.net
Here's the forum post about this on the SourceForge project site: http://sourceforge.net/forum/forum.p...orum_id=492606