Top Instagram Influencers Ranking - Curated directory of Instagram bloggers by country&category
Q-Stats - Get free marketing insights for every question on Quora.
Mention ✪ Influencers Dashboard - Identify the influencers talking about your company
Site Rank Data - View historical rank information of websites via time series charts.
The Influencer Marketing Stack - Free resources to launch a killer campaign
Seoxan - check seo report for any website, alexa ranking, server information, meta tags, authority, page speed and more