|Amazon EC2 Client in PHP|
This Amazon EC2 client in PHP is a simple, light-weight client app for managing Amazon EC2 images, instances, and key-pairs.
|Amazon EC2 Library in Java|
The Amazon EC2 Library in Java provides a base library for working with the Amazon EC2 web service.
|Compass Cloudfiles API|
PHP5 API for Cloudfiles that runs on Zend Framework and is closely modeled after the interface in Zend_Service_Amazon_S3
|Python Overview for Amazon EC2|
A low-down on the EC2 service along with some python example code on using EC2.