Genius Beta - Annotate the Internet
Pocket - When you find something you want to view later, put it in Pocket.
Quoty - A WordPress plugin for sharing selected text
Raindrop.io - All your articles, photos, video & content from web & apps in one place.
Genius - Genius is the world’s biggest collection of song lyrics and musical knowledge.
Tettra - Tettra is a company wiki that helps teams manage and share organizational knowledge.