Bookmark OS - Bookmark OS is like Mac or Windows optimized for bookmarks.
Raindrop.io - All your articles, photos, video & content from web & apps in one place.
Twitter Bookmarks - Create shortcuts to your favorite users/tweets on Twitter
Freezetab - A powerful alternative to bookmarks.
Forereads - Discover what the experts in tech, design and AI are reading
Pocket - When you find something you want to view later, put it in Pocket.