Price = Free
Piwigo is a free Image gallery script where users can rate pictures, comment as well as find best rated pictures. Users can sort pictures in accordance to their preferred preferences and it becomes quite easy to find pictures related by tags, ratings, category etc. An open source image gallery script at free of cost.icanhascheezburger became very successful by just making a popular gallery of cats. You can too by using this free open source script and refining your area of interest. Who knows you also can be raking millions in a matter of months.
Tiny Pic CloneFree Image Gallery Script