Time Out - Break timer with micro-breaks for Mac OS X.
Teeny Breaks - Mindfulness tips to make the most of your breaks 🧠💖
Breaktime - Break time is an app that reminds you to stand up every chosen amount of time.
Stretch From Home - Illustrated stretching routines for your home office
stretchly - break time reminder app
Focus - New Tab page that gives you a moment of calm and inspires you to be more productive.