Dovetale - Find and work with influencers using image recognition
The Influencer Marketing Stack - Free resources to launch a killer campaign
Top Instagram Influencers Ranking - Curated directory of Instagram bloggers by country&category
CreatorDB - Data-Driven Influencer Marketing
Insense & Paid Media - Find creators for short-term and long-term partnerships
Fan Grader - Discover your most influential Facebook fans for free.