Suggestions for a good gui for cyrus admin ??

[J.A.J. van Belkum]

Howdy all,

I am looking for a good tool to use for Cyrus User Administration.  I
know that there are some available, but I am wondering if someone has
good experiences with one.  I am running the system on a redhat Linux
server and the cyrus system will serve about 1000 users.

I am open for any suggestions....

Thanks,
        Aukjan