dirhtml is an HTML indexer generator for file directory structure with very comprehensive functionality and GUI. It is mainly used to export the whole folder structure as an direct accessible HTML page, supports very detailed custom settings (especially for advanced users).

Locate32 is a small, fast local search applet, I think when you see that this is a local search tool, you may very naturally think of Google Desktop, and believe it is enough for usage. But what I have to tell everybody is: Locate32 and Google Desktop are quite different.