SuperClock...one of my favorites.
I found that for utilities like that the best places to get them are on the actual media. Go to your library and search for either of the following:
1. Macworld Mac & Power Mac Secrets, 2nd Edition (floppy disks include SuperClock and a few other goodies)
2. Macintosh Revelations (you get a CD-ROM with a ton of utilities, games, etc on it)
At this point in time your best bet may be a used book sale for either of these titles, but those two were my favorite souces for shareware/freeware.