inSSIDer - inSSIDer Essential makes it easy to maintain small business WiFi.
NetSurveyor - NetSurveyor is an all one network diagnosing and troubleshooting tool for the Windows operating systems.
NetSpot - NetSpot is a free app for wireless site surveys, Wi-Fi analysis, and troubleshooting
Omnipeek - Omnipeek is a packet analyzer software tool from Savvius that allows network troubleshooting and protocol analysis and enables decoding thousands of protocols for fast network troubleshooting and diagnostics for anywhere network issues.
Wifi Analyzer - Wifi Analyzer is a handy tool which helps you to select a better channel for your wireless router.
Vistumbler - Vistumbler is a wireless network scanner for Windows Vista and Windows 7. Features: