SpiderOak — Dropbox for a post-Snowden world. Seamlessly sync your *encrypted* files between your computers. SpiderOak’s servers never know the plaintext contents of the data being stored.
Boomerang for Gmail — Set a Gmail conversation to re-surface in your inbox after a specified length of time. A must-have for managers.
Gmail GTD — *The best* thing I’ve ever done to tame my inbox. I don’t let emails drop, and this is the reason why.
Divvy — Divvy is a window management application for OS X. If you’re into keyboard shortcuts, this app is for you. It allows to to re-arrange the windows on your mac with a keystroke. No more error-prone dragging and dropping.
Caffeine — Caffeine is an app that prevents your Mac from automatically going to sleep, dimming the screen or starting screen savers