Bookmark OS - Bookmark OS is like Mac or Windows optimized for bookmarks.
Syften - Better social media keyword alerts
Raindrop.io - All your articles, photos, video & content from web & apps in one place.
mention - Media monitoring made easy with Mention. Create alerts on your name, brand, competitors and be informed in real-time of any mention on the web and social networks
Twitter Bookmarks - Create shortcuts to your favorite users/tweets on Twitter
SOCIALHOSE.IO - Discover an enterprise social listening platform that enables brands & agencies to monitor the web & listen to their audience, built to scale. Start for free!