Here are my less-standard ones for OS X:
- Vitamin R2: Easy pomodoro-like timeboxing with a scratchpad - http://www.publicspace.net/Vitamin-R/
- Keyboard Maestro: Keyboard shortcuts for all the things - www.keyboardmaestro.com/
- Euclid: allows you to easily measure anything on screen in pixels - http://euclidapp.com/
- RescueTime: Tracks time usage, handy - https://www.rescuetime.com
- Backblaze: Easy backups - http://www.backblaze.com
- Flux: Adds red hue in the evening, allowing brain to produce Melatonin - http://justgetflux.com/
- Caffeine: Click to disable screen from auto-shutting off - http://lightheadsw.com/caffeine/
- Bartender: Keeps my menu bar less busy - http://www.macbartender.com
Screenshot: https://www.dropbox.com/s/6t9p6nhf1whn000/Screenshot%202013-11-30%2022.42.04.png