The WWW was invented by Sir Tim Berners-Lee on the NeXTSTEP operating system. The same OS forms the source of Apple’s OS X, iOS, watchOS and tvOS. NeXTSTEP was originally written for the NeXT computer and is based on UNIX.
The email message in which Marc Andreessen announced the release of NCSA X Mosaic browser hasn't been lost in time. It still exists! Though there were other web browser before it, Mosaic is generally credited to have made the "WWW explosion". [more...]