2016bestnine - Your best nine Instagram pics from 2016
Instaround - A simple app to find Instagram photos and people around you.
Timehop - Your digital life history
Roundio - Explore what people posted to Instagram or Flickr near you
Likecreeper - Randomly hit like on a friend's horrifyingly old Instagram
Herefeed - See what's hot near you. Powered by Instagram.