Timing - Timing is the best way to keep track of the time you spend with your Mac.

Visualping - Visualping is the easiest to use website checker, webpage change monitoring, website change detector and website change alert software of the web. Read more about Visualping.

Timeneye - Time Tracking Software for Teams and Freelancers

Distill Web Monitor - Distill is a web monitoring tool. It can monitor RSS feeds, a webpage or a part of webpage. Alerts in the form of pop-up, audio or emails can be received.

ZEI° - Revolutionary time tracking device

Wachete - Track web page changes and get notified. Free Sign-up. Have all data in one place