I think TRAC definitely fits this description.  It is pretty 
customizable, so you can adjust categories to your liking.  (This 
requires a command-line tool.)  I would advise having a separate TRAC 
for each big project, so that features like the timeline and roadmap 
don't become meaningless.

I've also seen JIRA used to good effect.  It is commercial software, but 
has an open API and is free for open source projects.

Greg

___
Greg Jansen
Digital Repository Developer
University of North Carolina at Chapel Hill

On 2/10/2010 6:59 PM, Walker, David wrote:
> Can anyone here recommend an open source system for "change management"?
>
> Not version control, per se.  But the process of requesting, reviewing, and approving changes to production systems.
>
> Does Trac fit into this category?
>
> --Dave
>
> ==================
> David Walker
> Library Web Services Manager
> California State University
> http://xerxes.calstate.edu
>
>