This reloader is a little script that I threw together today. You can run it with the directory or file that you're editing and when it sees a change it will call reload on that konqueror. Of course, you've got to have konqueror, dcop, IPC::Run, and SGI::FAM, but life is no fun without dependencies.
Anyway, you'll need a fair bit of screen space to make this useful. I start it in an xterm like so:
xterm -e 'cgi-bin/test.cgi http://localhost/cgi-bin/test.cgi' &
What do other people do when developing for the web? Ctrl+s,Alt+tab,Ctrl+r? (or even more keys if you're in emacs I guess.)