FruityWifi is an open source tool to audit wireless networks.

FruityWifi is an open source tool to audit wireless networks. It allows the user to deploy advanced attacks by directly using the web interface or by sending messages to it. 

Initialy the application was created to be used with the Raspberry-Pi, but it can be installed on any Debian based system. 

FruityWifi v2.0 has many upgrades. A new interface, new modules, Realtek chipsets support, Mobile Broadband (3G/4G) support, a new control panel, and more.

http://www.fruitywifi.com/index_eng.html