Apps with 'Wardriving' feature

Vistumbler is a wireless network scanner and mapping utility designed for Windows Vista and above

an in-development wireless geolocation database with public domain data dumps - alternative to Mozilla Location Services

WiGLE (or Wireless Geographic Logging Engine) is a website for collecting information about the different wireless hotspots around the world.

G-MoN is a Wardriving scanner to collect and map all received wifi access points. It is also a 2G/3G netmonitor and field test drive tool for radio planning engineers.