Almost 14 years ago the first commercially available "Internet Phone" was presented at the German IT fair CEBIT in 1994 by the company Vocaltec and released for sale to the public on the 15 February 1995 for $69.
This little application was way ahead of its time and apparently worked pretty well on 33.6 dial-up connections using Windows or Mac - something hard to believe in our broadband age.
All credit goes to the pioneer developers of this software, who without realizing the significance at the time, launched the multi billion dollar VoIP industry.