uberflip - Organize and Centralize ALL of your Content in minutes

Reddit - Reddit gives you the best of the internet in one place. Get a constantly updating feed of breaking news, fun stories, pics, memes, and videos just for you.

CoSchedule - CoSchedule is the #1 marketing calendar that helps you stay organized and get sh*t done. Plan, produce, publish and promote your content.

Contextly - Contextly provides content recommendation system for publishers.

Rocketium - A DIY video creation platform. Make videos in minutes using preset themes and templates.

Digg - Digg delivers the most interesting and talked-about stories on the Web right now.