Firefox

The free software market is heating up in the VoIP space. Gizmo and Jajah are two new entrants.

The main system for talking over the Internet is something called SIP (Session Initiated Protocol), which like many modern standards seems to be designed by hardware makers to get people to buy expensive stuff. However, the open source/free software people are moving in and have made some good progress lately. See Gizmo, for example. There's also a Skype competitor called Jajah that allows you to talk with Skype users. There will be more options in the future, but at the moment Skype is king if you want it to just work, and work very simply.

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