Cello
Samba
ViolaWWW
Mosaic
 
Correct Answer: Samba

A brief explanation why…

Perhaps more commonly known as MacWWW, Samba was developed by Robert Cailliau (as well as Nicola Pellow later on) at CERN and was released in pre-alpha form circa December 1992 and version 1.0 emerged in May 1993.

Written in Think-C with code borrowed from the line mode browser also created at CERN, MacWWW/Samba was a minimalist text-only browser that worked on Classic Mac OS, System 6.0.5 and System 7.

The Mac's first web browser was obsolete within a year due to competition from Mosiac and MacWeb, which had more features (apparently MacWWW/Samba didn't even show page loading status).