Simon
The essential site monitoring tool for Mac OS X. Simon checks servers for changes or failures, and notifies you via email, sound, speech, or other means. You can use it to track updated sites, and to alert you when an important server goes down or recovers. Use Simon to monitor your websites and servers, get notifications of updates to favorite news and entertainment websites, keep an eye on auctions, communicate with arbitrary servers, and many other uses. [Learn more...]