At Capsule we love APIs; they allow Capsule to be connected with other popular web applications like Google Apps which we integrated with recently. It's also great to see developers using the Capsule API in creative ways.
David at echolibre has created a PHP wrapper for the Capsule API and has kindly made it available on GitHub. PHP is a popular framework for creating web applications so our thanks go to him and his team for making it easier to integrate PHP applications with Capsule. Examples and further details are available on the echolibre blog.