Was Mosaic the first browser?
While Nexus was only used for the NeXTStep OS, the first commercially-available internet browser was Mosaic. Computer programmers Marc Andreessen and Jamie Zawinski developed the NCSA Mosaic web browser in 1993.
When was the World Wide Web released?
English scientist Tim Berners-Lee invented the World Wide Web in 1989. He wrote the first web browser in 1990 while employed at CERN near Geneva, Switzerland. The browser was released outside CERN to other research institutions starting in January 1991, and then to the general public in August 1991.