FRAP-os is a Firewall, VPN Server and Wireless Access Point on a SBC router and is based on Open Source software. More info is available on the Web Site which will be up again on 21-22 July.
A GUI app for wireless network info. The primary purpose is for sighting in directional antennae (antennas), and gives visual and audio information on the link strength as well as other info about the connection(s).