Tigris is a suite of scripts and Java servlets which works with tools such as CVS to provide an easy-to-use software development environment. I worked on Tigris as part of my former job at CollabNet. The core component of Tigris is called Helm, and most of the Helm code was written by either Daniel Rall (dlr at finemaltcoding dot com) or myself.
In August 2001, the source to the Tigris suite was closed, though development continues as CollabNet Enterprise Edition. The tigris.org open source development site now runs CEE, not Tigris (at this point a distant ancestor).
This directory contains tarballs of the CVS repositories for Tigris suite components as of the morning of August 30, 2001, slightly before they were moved off of tigris.org and onto the CollabNet extranet. The www/ directories of helm and releng contain information about the Tigris system.
The Tigris version of Helm contains project, user, and group administration; a fast, ultra-flexible fine-grained access control system; a task runner; a distributed caching and cache invalidation system, and a lot of other stuff. There are also other components, which I did some work on: Picayune (a tool for project news), Nidaba (project documents), etc. The code is old, but it's good.
Note that Anzu, Eyebrowse, and Noodle are still available from tigris.org; the snapshots for those components are presented here mainly for completeness.