Twitter Archive Eraser - Delete thousands of your tweets in one go —Well beyond the 3200 limit.
Nofanity - Nofanity removes swear words from YouTube videos
TweetDeleter - Browse and delete multiple old tweets with one click
Refined Twitter - A browser extension that improves the Twitter experience
TwitWipe - Delete all your tweets in one go
Detox for Facebook - Replace your Facebook feed with PH, HN, DN and more.