SteelApp is a software Application Delivery Controller. It's generally installed as a proxy, in front of groups of web servers, app servers and other networked applications.
Stingray provides the core features of a Load Balancer or Application Delivery Controller, an Application Firewall and Web Content Optimization. It also provides a rich data-plane programming environment called TrafficScript that lets you control how users interact with your services, letting you visualize, prioritize, rewrite, filter and debug all transactions.
The quickest way to get started with Stingray is to begin with the Developer Edition. Grab either the software (Linux or Solaris) or Virtual Appliance (VMware, Xen or OracleVM) installation and follow the instructions in the appropriate Getting Started guide.
If you have a particular project in mind and you would like assistance from Riverbed's technical and sales team, you should register for a full Stingray Evaluation.