hashtags.org - Hashtag is an extensive hashtag research platform for analytics and tracking of hashtags, providing...
HashtagWiki.com - Hashtag Generator Tool
RiteBoost - Auto-hashtags, Auto-emojis, GIFs and much, much more, all according to your Enahce rules.
Hashtag Suggestions for Instagram - Find the best hashtags for every photo
TrackMyHashtag - TrackMyHashtag is a Social Media Analytics tool which focuses on social media campaigns data tracking, collecting and analysing. TrackMyHashtag is currently serving in Twitter domain and possesses one of the biggest repository of Twitter data.
Hashtagify.me - Free hashtags search engine, with paid advanced analytics