SiteSentry is a great web site maintenance program with some very unique features. SiteSentry's primary function is to validate and monitor a given web site for broken links, either within a site itself, or those off the site residing on different servers. In addition, it can create a local copy of the selected web site and present a map of the site in a large variety of ways to make the maintenance process fast, simple, and efficient. The innovative Virtual Reality walk-through of the site allows users to "walk around" a three dimensional VR world depicting the hierarchical arrangement of pages on the site. SiteSentry offers tons of user-customizable options, and is great for web site designers, maintainers, and even power users looking to create a local copy or Virtual Reality (VRML) walkthrough of a web site.