Roundio - Explore what people posted to Instagram or Flickr near you
Timehop - Your digital life history
Picture.io - Klout score for Instagram. See how insta famous you are. 📷✨
My Year Photo Book - All your year’s Facebook & Instagram moments, in a book!
Herefeed - See what's hot near you. Powered by Instagram.
The Twayback Machine - View your friends' old tweets for fun and trolling