3 total votes
Skype

Skype

Skype is the world's fastest-growing service for Internet communication, allowing people everywhere to make unlimited voice and video calls for free. Skype is available in 27 languages and is used in almost every country around the world. Skype generates revenue through its premium service offerings such as making and receiving calls to and from landline and mobile phones, as well as voicemail and call forwarding services. Skype also has a growing network of hardware and software partners. ... more on Wikipedia

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List of Voice Over IP Companies Instant Messaging Programs, Applications, Systems and Platforms