Aircrack-ng - Aircrack-ng is an 802.
Nmap - Nmap Free Security Scanner, Port Scanner, & Network Exploration Tool. Download open source software for Linux, Windows, UNIX, FreeBSD, etc.
Fern Wifi Cracker - Your description
Angry IP Scanner - Open-source and cross-platform network scanner designed to be fast and simple to use
reaver - Reaver implements a brute force attack against Wifi Protected Setup (WPS) registrar PINs in order...
Advanced IP Scanner - Advanced IP Scanner shows all network devices, gives you access to shared folders, and can even remotely switch computers off. Download it Free.