"CollabNet, a firm focused on software that supports distributed development, launched a hosted version of an open source code version management system, Subversion, which was designed as a replacement for more local version control software. Read/write systems, such as a version control system, have to coordinate continuous changes from many different contributors. They tend to work best as a local system, with developers clustered around it. They are "inherently difficult to make as distributed systems," says CollabNet CTO Brian Behlendorf, co-founder of the Apache Web server project.
CollabNet's framework is in use at Sun Microsystems, Hewlett Packard and on several of the open source project hosting sites. It forms the backbone for operations at Java.net, a site that hosts 2,755 Java open source projects with 228,000 participating developers."