Listr - Listr lets you explore some of the best lists on Twitter, curated across your favorite categories.
Nofanity - Nofanity removes swear words from YouTube videos
Refined Twitter - A browser extension that improves the Twitter experience
Vicariously.io - Create Twitter lists based on the follows of other users
Detox for Facebook - Replace your Facebook feed with PH, HN, DN and more.
Blindfold - Make your life on Twitter more positive