NetSpot - NetSpot is a free app for wireless site surveys, Wi-Fi analysis, and troubleshooting
MATLAB - A high-level language and interactive environment for numerical computation, visualization, and programming
Vistumbler - Vistumbler is a wireless network scanner for Windows Vista and Windows 7. Features:
GNU Octave - GNU Octave is a programming language for scientific computing.
Kismet - Kismet is an 802.11 layer2 wireless network detector, sniffer, and intrusion detection system.
Wolfram Mathematica - Mathematica has characterized the cutting edge in specialized processing—and gave the chief calculation environment to a large number of pioneers, instructors, understudies, and others around the globe.