PutCut - PutCut is a social bookmarking tool for saving links.
Raindrop.io - All your articles, photos, video & content from web & apps in one place.
Bookmark Llama - Effortlessly share bookmarks with your team
Pocket - When you find something you want to view later, put it in Pocket.
Tettra - Tettra is a company wiki that helps teams manage and share organizational knowledge.
Delicious API - Delicious is a social bookmarking service.