NetSpot Pro Wi-Fi Optimizer: $19.99

Check out NetSpot, a software utility that lets you visualize, optimize, and troubleshoot your wireless networks with any MacBook. It allows you to do something as simple as measure signal strength in a given spot, but if you are serious about optimizing your network, it has mapping tools that will allow you to precisely figure out signal strength in every nook and cranny of your home or office. It retails for $149, but through our deal you can get it for $19.99. There's a video on the deal page...