Tomito
Tomito is a free Pomodoro app for Mac. It’s beautifully designed and highly flexible.
Recently updated
TomatoBar has another sound, which was there all along.
TomatoBar
A nicely designed Pomodoro app for the Mac menu bar.
Mac timers
Apps for Mac, cool, free.
Minuteur
Nifty Mac timer, well suited for use with the Pomodoro Technique