Motorola LANPlanner

"LANPlanner is a direct descendent of one of the original WLAN predictive tools from RF modeling pioneer Wireless Valley, acquired by Motorola. This is a very robust product, and, like all planning tools, perhaps a bit intimidating to non-engineers. Operation, however, is straightforward, and includes both predictive and analytical capabilities."

http://www.networkworld.com/reviews/2009/062209-wlan-site-survey-motorola-lan-test.html