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
Groouply - Track keywords on Facebook groups
KUKU - KUKU.io is a powerful social media marketing and analytics platform.
Notikey - Get notified when your keywords are mentioned on Reddit
Google Alerts - Google Alerts will send you email or RSS updates of the latest relevant Google results (web, news...
UpvoteTracker - Track the upvote history of Reddit and HN posts