Infocus is a simple Chrome extension that blocks distracting websites when you are trying to focus. It has a few neat features, such as periodic notifications to get you back on track and math problems to discourage you from disabling it :)
Fight your feed addiction
Feedless blocks your Facebook, Twitter, and Instagram feeds in Safari on your iPhone. You can use all other parts of the services as usual, we just block the feed. Take control of your time, and say goodbye to mindless scrolling!