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Tim Berners Lee wrote the first web browser on a NeXT computer, called WorldWideWeb, finishing the first version on Christmas day, 1990. He released the program to a number of people at CERN in March, 1991, introducing the web to the high energy physics community, and beginning its spread.
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After a visit from Robert Cailliau, a group of students at Helsinki University of Technology joined together to write a web browser as a master's project. Since the acronym for their department was called "OTH", they called the browser "erwise", as a joke on the word "otherwise". The final version was released in April, 1992, and included several advanced features, but wasn't developed further after the students gra
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Marc Andreessen and Eric Bina from the NCSA released the first version of Mosaic for X-Windows on Unix computers in February, 1993.
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Berners-Lee and a student at CERN named Jean-Francois Groff ported the WorldWideWeb application from the NeXT environment to the more common C language in 1991 and 1992, calling the new browser libwww. Groff later started the first web design company, InfoDesign.ch.
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August, 1994, NCSA assigned commercial rights to Mosaic to Spyglass, Inc., which subsequently licensed the technology to several other companies, including Microsoft for use in Internet Explorer.
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In October, 1994, Netscape released the the first beta version of their browser, Mozilla 0.96b, over the Internet. On December 15, the final version was released, Mozilla 1.0, making it the first commercial web browser.
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On August 23rd, 1995, Microsoft released their Windows 95 operating system, including a Web browser called Internet Explorer
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Opera 2.1 was first made available on the Internet in the summer of 1996.
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Explorer had a third of market share, and passed Netscape to became the leading web browser in 1999.
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Netscape was then developed called Mozilla, which was the internal name for the old Netscape browser, and released in 2002.