IP Voice Communication
This page is about Skype and Alternatives to Skype; specifically, software that allows users to make telephone calls from their computer to other software users, or to landlines and cell phones. Typically calls from software users to other users of the same software are free, while calls from software users to standard telephones involves a fee.
Skype
With Skype you can communicate voice over the Internet to other Skype users for free. Internet users should be wary of Skype because its strategy is a throwback to the '80s built on proprietary standards that locks out all others.
SkypeOut allows Skype users to call traditional telephone numbers, including mobile telephones, for a fee.
SkypeIn allows Skype users to receive calls on their computers dialed by regular phone subscribers to a local Skype phone number.
Skype currently does not support FAX. Business users that wish to receive incoming facsimiles must seek a 3rd party solution.
OpenWengo
Gizmo