Port Monitor is an easy tool that does website and server monitoring 24/7 every 60 seconds for free.

Growl for Windows is a Windows-compatible version of Growl, a notification system for Mac OS X.

Boxcar is a universal push notification platform.

Growl is a global notification system and pop-up notification implementation for the Mac OS X and Windows operating systems.

Pokki Menu is a Windows 8 start menu replacement.