User Gallery is a very useful WordPress plugin that allows your users to submit photos to your Gallery. The plugin is very sophisticated a gives the website owner 100% control over the content and the user has full control over their own photos. The plugin supports unlimited categories, image metadata (EXIF), comments (WordPress or Disqus). image resizing, e-mail notifications, and many other features.
Demo: https://codecanyon.net/item/user-gallery-wordpress-plugin/16122370
