hashtags.org - Hashtag is an extensive hashtag research platform for analytics and tracking of hashtags, providing...
FameBit - Easiest Way to Find, Hire, and Work with YouTube Influencers
For Display Purposes Only - Used to populate several related hashtags based on one or more input. (alt. to Leetags)
inzpire.me - An end-to-end solution for influencer marketing
HSHTG - Generate, manage, save and edit hashtags just in a few finger tap
Insense & Paid Media - Find creators for short-term and long-term partnerships