What about SRTP and ZRTP? No segregation is needed for these to work (Will work also over the internet automatically using these encryption methods between supported endpoints). Also there are solution for companies which can handle encryption transparently such as the mizutech voip tunnel.

At least there will be more tunnel users: http://www.mizu-voip.com/Products/VoIPTunnel.aspx :)

Does anyone know a store that sells this?

Using the ordinary GPL for a library makes it available for free programs.

I thing you are wrong. If they are just using the dll -s, then they are not violating the GPL license. (I mean if they just created a GUI for it without any need to modify the ffmpeg source)

IOCP is perfect for both high bandwidth and low latency. ...you have to use the "ugly" windows os for it :)

I can recommend the voip server and client from mizutech http://www.mizu-softphone.com./ It has built in encyption capable for handling up to 10000 client. Unfortunately it is not free.

> they bring absolutely nothing new to the table. they are using the open SIP protocol. this can be a big advantage > No webcam support you are wrong. HD quality video is there > Windows only yes in case of mizuphone. there are other alternatives for other platform (and all sip client can communicate with each other with no problem. can you make call from yahoo to skype?) > Proprietary. there are also opensource sip applications skype is also proprietary >Costs money Yes, if you buy from mizutech. but from voip service providers you can download it for free >the GUI is kinda ugly work in progress

Streaming not working at all from version 0.9. Version 0.8.6i was the last version that worked. I have tested all versions on windows trying to receive the RTP stream on localhost.

The main problem is, that there is no much SIP based competition for skype on the desktop market, so they can acquire a big market share quickly with this movement. Most of the SIP based softphone looks like from the past century. There are a few good softphone that could be a viable solution near skype, for example Mizu softphone http://www.mizu-softphone.com/ but unfortunately near skype/msn/yahoo marketing there is no much chance to become popular for small companies.

I am a developer for Mizu softphone ( http://www.mizu-softphone.com/ ), that is a VoIP client which are used by several providers around the world. 2 from 3 of our customers ask for "modified" version because their ISP block VOIP. And we are giving out our voip software with random port changes, TLS/SRTP encryption or just some proprietary encryption and VPN tunnel capabilty. I don't really understand, how they think their tricks can restrict VOIP. The article say: " the restriction on ISPs to connect directly to international carriers". But as i know, global carriers has endless list of IP addresses :)