The frustration is immense when you’re dealing with a spotty Wi-Fi connection—especially if that connection is in your own home or business. NetSpot, a software utility for analyzing and troubleshooting Wi-Fi networks, is an essential tool. It determines the rough location of your base stations, and maps out the strong and weak points of Wi-Fi coverage in a building. You can then use the information to adjust your base stations accordingly, or to figure out where to put Wi-Fi expanders. Even though NetSpot is a networking utility, it uses friendly visual cues to help you understand the collected data.