I've written* a wiki based on webrick and redcloth that allows 
authentication (using the standard webrick authentication handlers) and 
file uploads.  It also has automatic linking between pages (which some 
people love, and some people don't - 
http://www.instiki.org/show/AutomaticLinking ), calendar, and sort of 
blog style summary page support.

What it doesn't have is a lot of testing or an established track 
record+, so may not be appropriate for the original poster.

I'm going to put it on rubyforge over the next few weeks, but I thought 
I would mention it on this thread as well, in case anyone feels an 
interest.

Tom
* I know this is a bit of 're-inventing the wheel' rather than 
improving the other good wikis out there, but I fancied the challenge 
as part of my 'learning ruby' process.
+ But my university group use it as a team wiki, and it is starting to 
be used in a couple of other places around the university.

On 14 Dec 2004, at 20:32, Bil Kleb wrote:

> Hello again,
>
> Another internal project team would like to start
> up a Wiki, but it needs to have file upload support
> (PDF,.doc,.ppt, and so forth).
>
> Do any of the Ruby engines support this?  (I'm having
> a hard time answering this via dialup on the road.)
>
> Thanks,
> -- 
> Bil Kleb, Hampton, Virginia
>