eggTime 1.3 for Mac was available as a free download on our application library. The application is included in Business Tools.
From the developer:
eggTime is a little countdown timer. It will ask after how many minutes it should warn you and puts a display file on your desktop; the display file name shows you the time left. When the alarm goes off, eggTime can notify you.
You may want to check out more Mac applications, such as Egg-Time Counter, which might be similar to eggTime.