iSignal is a sidebar gadget that can monitor wireless signal level. A small tool that will allow you to monitor the wireless signal level.
iSignal Features:
1. Still working after resume of sleep / hibernate.
2. Auto Refresh when disconect or change of network.
3. Show Signal Percent.
4. Show SSID.
5. Show IP Address.
6. Changeable color. (Blue,Red,Green,Orange,Pink)

The license of this software is Freeware, you can free download and free use this wireless communication software.