Miscellaneous Web Glue

stand-alone

keyboardless keyboard
Ever get stuck at a web browser kiosk with no keyboard? Couldn't figure out how to enter the URL you wanted? This might help. Of course, you have to get to this page first. It uses Javascript. I could make one that used only forms and a CGI program, but it'd run much slower.

Server-Based

These depend on other people's servers, so they're probably all broken by now.
coordinate finder
Find the coordinates of any US street address through a web form. Take a look at the perl stuff that drives it if you want.
directions
[People provide this service directly now, so we don't have to hack it anymore.] Get driving directions and maps for routes between two arbitrary points. I first hacked this up to make directions to my house, back before they made this stuff convenient. If you want to customize this, look at the source for that. The CGI script for this one is pretty simple.