IBM WebSphere

WebSphere refers to a brand of IBM software products that are mostly proprietary, although the term also popularly refers to one specific product: WebSphere Application Server. Some of them were
* Distributed Application & Web Servers
* Edge Servers
* Other Application Servers
WebSphere helped define the middleware software category and is designed to set up, operate, and integrate e-business applications across multiple computing platforms using Web technologies. It includes both the run-time components (like WAS) and the tools to develop applications that will run on WAS.