Official Box View PHP SDK by Box. With this resource, developers can upload documents to after generate customized viewing sessions. It requires PHP 5.4 or newer. Installation can be complete either with composer, working with a dependency manager for PHP or without composer, using Guzzle, an extensible PHP HTTP client.
Cloud computing is big right now, but the sheer number of options, and the lack of interoperability, can be an issue for developers. There are a number of projects that can reduce, or even eliminate, some of these problems by exposing the functionality of a number of cloud service providers through a consistent interface. Here is a list of 7 such projects.