Noizio - Feeling that the noise of the big city is too much for you to bear?
Focus - New Tab page that gives you a moment of calm and inspires you to be more productive.
Hipster Sound - Be productive at home with the sounds of busy cafes.
Go Fucking Work - Website blocker so you can get back to your fucking work
Noizer - Ambient sounds like Noisli, but free
SelfControl - V2 updates! - Custom time interval for distraction free mode - Ability to turn off ' always on' mode - Improved UI -- Self Control -- A simple app to keep you focused online by blocking sites that you spend way too much time on.