Popularly know as Heatmap software, there are many available in the market.   Without a tool, it is very difficult to plan and arrive at number of access points.   These software tools show what is going on inside your 802.11 network.  They provide the right visualization and data collection capabilities to complete a Wireless LAN site survey.  We certainly can’t just plan a site based on simple rule of thumbs like 2000 square feet one AP.   WiFi design tools are a very important component in a WiFi survey professionals.   We at  KloudWiFi offer two of the industry’s leading tools –  Ekahau  and Aircheck G2.