Net Checker - for Mac: runs in the background in your status bar, checking that your Internet connection is sound.
Ever had an WiFi router that occasionally stopped talking to the Internet was especially when all that would happen would be a web page waiting forever to load?
Net Checker doesn't fix the problem, but tells you when it happens; that eases the frustration a little. Net Checker can also monitor, telling if any of your favourite websites are down. Simple, very compact - works a treat!