Mac: If you’re looking for a stylish and customizable break timer for Mac OS X, Time Out is a solid pick. Adjust the transparency, control iTunes and other apps, create exclusions, and more.
Not only can you create timer routines with break periods, you can also tweak the appearance of Time Out and set up scripts to control apps on your Mac. Want it to play soothing music on your break? Pause your music will you go outside? Change your IM status? Time Out can handle all those tasks and more. Hit up the link below to read the full feature list and grab a copy.
Time Out is free, Mac OS X only.