Raindrop.io - All your articles, photos, video & content from web & apps in one place.
Bookmark It - Create awesome notes on YouTube videos
Bookmark OS - Bookmark OS is like Mac or Windows optimized for bookmarks.
PageMarker - Save, organize, annotate and revisit your bookmarks
Freezetab - A powerful alternative to bookmarks.
Pocket - When you find something you want to view later, put it in Pocket.