The World-Wide Web Worm (WWWW) is claimed to be the first search engine for the World-Wide Web, though it was not released until March 1994, by which time a number of other search engines had been made publicly available. It was developed in September 1993 by Oliver McBryan at the University of Colorado.
The worm created a database of 300,000 multimedia objects which could be obtained or searched for keywords via the WWW. In contrast to present-day search engines, the WWWW featured support for Perl regular expressions.
The website, http://www.cs.colorado.edu/home/mcbryan/WWWW.html, is no longer accessible.
References
World-Wide Web Worm Wikipedia(Text) CC BY-SA