Meltwater - Media monitoring, social media monitoring & media Intelligence products & tools help companies grow and build brands by listening, understanding, engaging and benchmarking their customers, markets and social business communities.
HSHTG - Generate, manage, save and edit hashtags just in a few finger tap
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
HashtagWiki.com - Hashtag Generator Tool
Determ - Web & social media monitoring for SMBs
Hashtagify.me - Free hashtags search engine, with paid advanced analytics