Blue Twilight is an open-source photo gallery web application written in PHP and using MariaDB or MySQL for data storage. You run the PHP photo gallery on your own server or web hosting so you are in full control over who can access your images. You can also use Blue Twilight Cloud to get your own dedicated instance of Blue Twilight without the hassle or technical know-how of managing servers and hosting. Supports storing your images on cloud storage such as OpenStack (Memstore, DreamObjects), Amazon S3 or Rackspace. It even takes advantage of your provider's CDN (content delivery network) to serve your images quicker and save your hosting bandwidth. Blue Twilight is developed by an enthusiastic, individual developer. I'm open to all suggestions to make this software great!