Wireless Network Watcher - scans your wireless network and displays the list of all computers and devices that are currently connected to your network.
Aircrack-ng - Aircrack-ng is an 802.
Kismet - Kismet is an 802.11 layer2 wireless network detector, sniffer, and intrusion detection system.
My WIFI Router - Wifi Hotspot creator for Windows
Fern Wifi Cracker - Your description
inSSIDer - inSSIDer Essential makes it easy to maintain small business WiFi.