F-Stop Media Gallery - Image and video organizer.
Flickr - image and video hosting website
A Photo Manager - Manage local photos on Android: gallery, geotag with photomap, tags, find, sort, view, copy...
Imgur - Imgur is a free and simple image hosting service with image editing feature. Signup is optional.
LeafPic - LeafPic is a fluid, material-designed alternative gallery.
Google Photos - All your photos are backed up safely, organized and labeled automatically, so you can find them fast, and share them how you like.