WiFi Radar is a Python/PyGTK2 utility for managing WiFi profiles. It
enables you to scan for available networks and create profiles for
your preferred networks. At boot time, running WiFi Radar will
automatically scan for an available preferred network and connect to
it. You can drag and drop your preferred networks to arrange the
profile priority. 1
Install WiFi Radar, just press Ctrl+Alt+T on your keyboard to open Terminal. When it opens, run the command below.
sudo apt-get install wifi-radar
To run it,
WiFi Radar has a new version 2.0 it can be downloaded from their website.
1Source: Ubuntu Geek