Good afternoon!

I'm hunting (or attempting to) hunt down a Software phone (IAX2 / SIP support) that has a 'browser' plugin like skype to allow 'clicking to call'.

So far I've been able to find MozPhone but the user interface leaves a lot to be desired.
Edit: Oops, MozPhone has been renamed to MozIAX and is available at

Any ideas?
Thank you for your help!