The best replacement for instagram is facebook.

The best alternatives to instagram are rated as following:
★★★★★  facebook
★★★★★  twitter
★★★★  flickr
★★★★  tumblr
★★★★  pinterest
★★★★  vine
★★★  snapchat
★★  whatsapp
★★  hipstamatic
★  snapchat vine
★  real life
★  statigram
★  picplz
★  tumblr which is better
  path
  facebook users
  vignette
  eyeem
  photobucket
  twitpic
  picasa
  camera
  snapseed

Your alternative for instagram is not listed? Suggest!
Speaking about instagram, one probably shouldn't forget about facebook.

Other search terms related to instagram and their ratings are:
★★★★★ facebook
★★ twitter
★★ video
★★ account
★★ multiple accounts
★★ cropping
★★ hootsuite
★★ melissa
★ multiple pics
★ blackberry
videos
an account
hashtags
multiple photos
video app
collage
You have in mind a companion for instagram and it is not yet here? Propose!



Google Trends

Scale is based on the average worldwide traffic of instagram in all years. Click on graph for more.
instagram
facebook
twitter