After a long wait, one of my favorite utilities is now Snow Leopard Compatible.
Enter iStumbler 0.9.9 on February 16th, 2010.
iStumbler is the leading wireless discovery tool for Mac OS X, providing plugins for finding AirPort networks, Bluetooth devices, Bonjour services and Location information with your Mac.
Release 99 includes a number of bug fixes and enhancements for Mac OS X Snow Leopard.
I really missed this app.
iStumbler is also available for Mac OS X Leopard (10.5), Tiger (10.4), Panther (10.3) and Jaguar (10.2).