F-Stop Media Gallery - Image and video organizer.
Img.vision - Image hosting & video hosting for eCommerce sellers
Camera Roll - Simple Gallery App for Android, with lovely Material Design.
UploadHouse - Thumbnail and resize your photos and images
LeafPic - LeafPic is a fluid, material-designed alternative gallery.
ImageVenue - ImageVenue is a great online hosting service that allows uploading pictures for showing creative works with a simple-to-use technique.