Minter.io - Instagram Analytics. Twtitter Analytics. Facebook Analytics
Timehop - Your digital life history
Instagram Analytics by Socialinsider - Get better at Instagram marketing by studying competition
My Year Photo Book - All your year’s Facebook & Instagram moments, in a book!
HypeAuditor - All-in-one Influencer Marketing Platform
The Twayback Machine - View your friends' old tweets for fun and trolling