Hvper - The Internet on one page. Successor of Popurls, the mother of news aggregators.
Detox for Facebook - Replace your Facebook feed with PH, HN, DN and more.
Muckerty - Find out the relationship between people, organizations, and companies in the news.
Focus - New Tab page that gives you a moment of calm and inspires you to be more productive.
Notify by Facebook - Notifications that matter from sources you love
FriendFilter - Auto unfriend tool for Facebook