start.me - A Modern-day bookmark manager. A place for your favorites. A news feed (RSS) reader. A browser startpage. A portal for your team.
Raindrop.io - All your articles, photos, video & content from web & apps in one place.
Pocket - When you find something you want to view later, put it in Pocket.
Weje - Organize your ideas & projects into white boards without limits
Diigo - Diigo is a powerful research tool and a knowledge-sharing community
GGather - Effortless and organized way to store and share your bookmarks with the right mix of features.