WiFiMonitor is an easy to use tool that displays your wifi connection information in a easy and clear way.
It displays Signal to Noise in a easy to understand graph, rates your connection, as well as displaying real time data on your Received Signal Strength and Noise.
WifiMonitor can be hidden in the background, so it does not interfere with your other apps.
- Added new stat, shows WiFi Quality as %
OS X 10.8 or later, 64-bit processor