A fundamental problem with the World Wide Web is the enormous number of resources available and the difficulty of locating and tracking everything. In this paper we will discuss two tools, GENVL and WWWW, designed to deal in different ways with resource location on the WWW. GENVL is an interactive user-driven hierarchical virtual library system for cataloguing Web resources. The real power of GENVL comes from the built-in recursion which is the key to extendibility and to avoiding the generation of massive linear lists. GENVL has been accessed 112,000 times in 4 months. WWWW - the WWW Worm - is a resource location tool. It is intended to locate almost all of the WWW-addressable resources on the Internet, and provide a powerful search interface to those resources. Searches can be performed on document titles, reference hypertext, or within the components of the URL name strings of documents - for example to locate all mpeg movies in Finland. WWWW has been accessed 60,000 times in 45 day...