I have been an iStumbler user for many years, lately via MacPorts, and recently
have had some folks ask me about it's status.
If you visit www.istumbler.net -- it does not support Mountain Lion, and only
the beta of iStumbler 100 supports 10.7 Lion.
Clearly, the MacPorts implementation runs on
1- is anybody supporting iStumbler anymore? It doesn't look dead -- but it
is clearly not current.
Looks like it gets touched up by whomever feels like it:
http://trac.macports.org/log/trunk/dports/aqua/istumbler/Portfile
Note that +use_binary is the default variant, which installs a .app