Raindrop.io - All your articles, photos, video & content from web & apps in one place.
LinkAce - A selfhosted bookmark manager with advanced features.
Pinterest - Pinterest is a visual discovery tool that you can use to find ideas for all your projects and interests.
Additor beta - Pocket and Evernote got a minimal and collaborative baby
Diigo - Diigo is a powerful research tool and a knowledge-sharing community
StartAid - You can save and organize your links.