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Jon Stephenson von Tetzchner (Icelandic: Jón; born 29 August 1967 in Seltjarnarnes) is an Icelandic-Norwegian programmer and businessman. He is the co-founder and CEO of Vivaldi Technologies. Before starting the Vivaldi Web browser, he launched a community site called Vivaldi.net. Tetzchner is also a co-founder and former CEO of Opera Software.
Headquartered in Oslo, Norway, [1] it was founded in 2013 by Jon von Tetzchner and Tatsuki Tomita. Tetzchner was one of the founders, [2] and formerly the CEO, of Opera Software, a software company which developed the web browser Opera. [3] About 20 former Opera employees joined him at Vivaldi Technologies. [3]
Geir Ivarsøy (June 27, 1957 – March 9, 2006) was the lead programmer at Opera Software.He and Jon von Tetzchner were part of a research group at the Norwegian state phone company (now known as Telenor) where they developed browsing software called MultiTorg Opera.
Opera Software was founded as an independent company in Norway in 1995 by the Icelandic Jon Stephenson von Tetzchner and Geir Ivarsøy. [9] They had initially begun development of the Opera web browser while both working at Norwegian telecommunications company Telenor.
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Jon Stephenson von Tetzchner – cocreated Opera web browser; Avie Tevanian – authored Mach kernel; Ken Thompson – mainly designed and authored Unix, Plan 9 and Inferno operating systems, B and Bon languages (precursors of C), created UTF-8 character encoding, introduced regular expressions in QED and co-authored Go language
The Opera web browser was created in 1994 by Jon Stephenson von Tetzchner and Geir Ivarsøy during their tenure at Telenor, and Opera Software was established in 1995, when they went on to continue development of their browser. [8] Telenor and Huawei conducted a successful test of 5G with 70 Gbit/s Speeds in Lab environment. [9]
Tetschner or Tetzschner (the Anglicized spelling Tetzchner is also used by some) is a German surname, which means "from Tetschen" (that is, modern Děčín) in northern Bohemia. [1] The surname is mostly found in Central Europe including Germany , but also in Denmark and Norway .