Looks-like is a project mainly written in PHP, it's free.
Image similarity detector
Looks-Like implements a very simple algorithm to detect similar images.
Basically, the algorithm reduces the image information to a 64bit number (hash) and computes the hamming distance between hashes to check if an image is similar to another.
AK Rando
ChenYen.Lai
Fulla T
Romain
teresia
Jill Clardy
Fulla T
Laenulfean
Big D2112
mikebaird
Yuri Samoilov
Hen3k Hen3k
Coal Miki
Coal Miki
Coal Miki
Coal Miki
Laenulfean