RightScale's AWS gems provide Ruby interfaces to four key Amazon Web Services: EC2, S3, SQS, and SDB. The gems use Amazon's REST and query interfaces to provide full programmatic control. An optional HTTP layer retries and clears transient error
The LemonStand API provides the ability to integrate its ecommerce tools into almost any website, and is aimed at the midsize merchant market. Built with Php, MySQL and Ajax, it is completely customizable using HTML and CSS. Updates are achieved through a single click. Lemonstand promises an upcoming App store for third party wares.