inSSIDer is free, open-source Wi-Fi scanning/analyzing software. What’s unique about inSSIDer?

• Compatible with Windows XP, Vista and 7 (x86 and x64)
• Uses the Native Wi-Fi API and your current wireless network card
• Sort results by Mac Address, SSID, Channel, RSSI and “Time Last Seen”
• Compatible with most GPS devices (NMEA v2.3 and higher)

How can inSSIDer help me?

• Inspect your WLAN and surrounding networks to troubleshoot competing access points
• Track the strength of received signal in dBm over time
• Filter access points in an easy-to-use format
• Highlight access points for areas with high Wi-Fi concentration
• Export Wi-Fi and GPS data to a KML file to view in Google Earth.
• Filter through hundreds of scanned access points

Get more information and download the last free version (3.1.2.1) of inSSIDer at here or grab the latest commercial version  at MetaGeek.