Timehop - Your digital life history
SmartMetrics - We monitor, analyze, and fix your Google Analytics, Search, SEO, and Ads metrics daily to provide you with better insights and more accurate data.
My Year Photo Book - All your year’s Facebook & Instagram moments, in a book!
Minter.io - Instagram Analytics. Twtitter Analytics. Facebook Analytics
The Twayback Machine - View your friends' old tweets for fun and trolling
Union Metrics - Union Metrics builds social analytics tools for brands and agencies.