To quote from the main Apache site:
"The Apache Software Foundation provides support for the Apache community of open-source software projects. The Apache projects are characterized by a collaborative, consensus based development process, an open and pragmatic software license, and a desire to create high quality software that leads the way in its field. We consider ourselves not simply a group of projects sharing a server, but rather a community of developers and users".
The key Apache software foundation projects show the wide scope of activites undertaken by a large number of widely dispersed organisastions.