SEMrush - service for competitors research, shows organic and Ads keywords for any site or domain
Statigram - All Instagram online
Easy Social Media Analytics & Measurement | Simply Measured
4 Free Tools to Measure Your Instagram Success
Curalate: Pinterest, Instagram Analytics & Marketing
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Open Site Explorer
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Ahrefs - Backlinks & SERPs Research Tool
Twitonomy: Twitter #analytics and much more...
CrowdRatio :: Social Network Analysis Platform
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SocialTimes.Me
Distimo: App Analytics, Conversion Tracking, App Download & Revenue Data
Moz: Inbound Marketing and SEO Software, Made Easy
Majestic SEO : Backlink Checker & Site Explorer
PageRank, website value review, page rank stats, keyword seo analytics
UserReport - Free surveys, click tracking & feedback for websites.
Getting Started With Google Analytics – Training & Certification – Google Analytics
Hits, Page Views, Visitors and Visits Demystified - Web Analytics, Behavioral Targeting and Optimization by Anil Batra
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"Absolute Unique Visitors" versus "New and Returning" - Analytics Blog
Analytics Basics: Unique Visitors, New vs. Returning Visitors | ClickZ
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Public Data Sets : Amazon Web Services
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