Refined Twitter - A browser extension that improves the Twitter experience
Sans Forgetica - Scientifically designed font to help remember study notes
Nofanity - Nofanity removes swear words from YouTube videos
conotes.io - Generate PDFs in Cornell format within your browser
Detox for Facebook - Replace your Facebook feed with PH, HN, DN and more.
A5 - Takes notes in your browser. Elegant & simple.