Timebar!

InerziaTimer is a small and easy to use application that can help you to measure time intervals. Its streamlined graphical user interface is not-intrusive and shows its powerful features at-a-glance.

MenuTimer is a timer that you can use from your menu bar. It can be used as a stopwatch or a countdown timer. MenuTimer has support for days, hours, minutes, seconds, and milliseconds. Also, you can customize the alarm message. More features on the way, if you need to time something then MenuTimer is the way to go.

Official website of JR Productions software and Timer Utility for OS X.