Twitonomy - Twitter analytics and much more.
hashtags.org - Hashtag is an extensive hashtag research platform for analytics and tracking of hashtags, providing...
Twazzup - Real-time Monitoring and Analytics for Twitter.
HashtagWiki.com - Hashtag Generator Tool
ExportData.io - Export Twitter data for your business needs.
RiteBoost - Auto-hashtags, Auto-emojis, GIFs and much, much more, all according to your Enahce rules.