While hopping about the Internet, some people said GizmoProject is to be a good contender to Skype‘s world domination plan.
Given that it supports as many platforms (less Windows CE, which nobody really cares anyway) as Skype (and is already available for Mac OSX), it’s probably the most attractively designed VoIP client based on the SIP (Session Initiation Protocol) technology, which is pretty much the standard in the VoIP industry. Skype uses its own proprietary protocol; and seeing how successful Skype is in the market, there’s no reason to believe Skype will provide its API to developers anytime soon.
However, since nobody is using this yet, I will hold out until enough people bug me to install it.
