Wifi Password(ROOT)
farproc(Free)How to Use Farproc to Root Access Your Samsung Galaxy S (Does Wifi PasswordROOT Work?)
FoxFi (WiFi Tether w/o Root)
FoxFi Software(Free)A Free app for Android, by FoxFi Software
Router Admin
RJ Studios(Free)Effortless Router Administration with Router Admin
Fing
OverLook(Free)Monitor Your Work Force With Advanced Network Monitoring Tools
Google Voice Search
Google(Free)A Free program for Android, by Google