Groouply - Track keywords on Facebook groups
Boreal - A Hacker News iOS app
UpvoteTracker - Track the upvote history of Reddit and HN posts
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
MackerNews - Beautiful Readable Hacker News Articles
Reddit Alerts - Track keywords on Reddit and get email alerts