Useful Resources

Tools – Some Free
http://www.metageek.net/products/inssider/
InSSIDr, is a free tool that helps you see the wifi around your location. What devices, SSID, Channels and more.
http://www.kismetwireless.net
Kismet identifies networks by passively collecting packets and detecting standard named networks, detecting (and given time, decloaking) hidden networks, and infering the presence of nonbeaconing networks via data traffic.
http://www.wireshark.org
Sometimes, you have to drill into captured packets to investigate suspicious findings, such as unauthorized apps on your WLAN. When it comes to free WLAN analyzers, nothing beats the cross-platform
http://www.ninite.com
All the PC admin tools you could need in one handy location!
Macintosh Tools
http://www.netspotapp.com
NetSpot is the easiest native wireless site survey software for Mac. You need just a few clicks to load your office plan or area map and start a network site survey. Just point to where you are on the map and NetSpot starts measuring wireless signal right away, move around, and collect Wi-Fi data. That’s it: now you have all the needed info to analyze radio signal leakages, discover noise sources, map channel usage, locate effective access points, etc.
http://bit.ly/YpvUX7
NetAdmin is a fully automated powerful monitoring tool which continuously provides diverse information on the local network you are connected. In your offices and homes, many devices would have been connected to the local network. Some may be strictly controlled, and some may not.
http://bit.ly/U2yVg2
WiFi Explorer – Scan, find, and troubleshoot wireless networks with WiFi Explorer. Quickly identify channel conflicts, signal overlapping or configuration problems that may be affecting the connectivity and performance of your home or office wireless network. Get an insight into the network details: name (SSID), MAC address (BSSID), device manufacturer, signal strength (RSSI), noise, channel, band, security configuration, supported data rates and much more.