Hypershoot - Bookmarking tool made for designers
Pocket - When you find something you want to view later, put it in Pocket.
Linkpack - Save, read and share your links
Raindrop.io - All your articles, photos, video & content from web & apps in one place.
Guardo.io - Guardo is the fastest and easiest way to collect, organize and bookmark any link on the web.
Diigo - Diigo is a powerful research tool and a knowledge-sharing community