Graphical Server Monitor
Some users ask me what kind of web server site monitor I use. My answer is a little server monitor written in REBOL, why of course.
It's not too fancy, but does what I need without requiring much bandwidth. It looks good, using DRAW commands to create the images, so I can just leave it running and easily see how the sites are doing from across the room.
For those who are interested, I've added the monitor and short description to the REBOL cookbook as the Graphical Internet and Website Server Monitor.