The 500px Ruby wrapper by Chris Micacchi has been designed to interact easily with the API capabilities of search, retrieve, and upload photos. It aims to reuse HTTP connections. 500px is a community of photographers who can showcase their projects, discover new photography styles, and find royalty-free art.
Most people don't realize how many popular photo services like Flickr, Smugmug and Picasa offer web APIs. In this overview, we'll take a look at the breadth and power of currently available photo APIs and the types of photo mashups developers are building with them.