You can learn more about the original "WorldWideWeb" browser from Tim Berners-Lee himself.
Since WorldWideWeb had a graphical user interface (GUI), it could be called a graphical web browser. However, it did not display web pages with graphics embedded in them That did not happen until the arrival of NCSA Mosaic 2.0.
The first graphical web browser to become truly popular and capture the imagination of the public was NCSA Mosaic. Developed by Marc Andreessen, Jamie Zawinski and others who later went on to create the Netscape browser, NCSA Mosaic was the first to be available for Microsoft Windows, the Macintosh, and the Unix X Window System, which made it possible to bring the web to the average user. The first version appeared in March 1993. The "inline images," such as the boutell.com logo at the top of this page, that are an integral part of almost every web page today were introduced by NCSA Mosaic 2.0, in January of 1994. Mosaic 2.0 also introduced forms.
For an excellent source of information about web browser history, consult Brian Wilson's browser timelines.
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