There's some information in the descriptions in the MODS registry:
On Fri, 28 Jan 2005, Bill Walker wrote:
> Pardon the newbie question, but MODS is rather new to me.
> What kinds of database systems are institutions that use MODS using to
> provide access to resources?
> Thanks and best wishes,
> Bill Walker
> Imaging Field Services Officer
> Amigos Library Services
> 14400 Midway Road
> Dallas, TX 75244-3509
> Phone: 800-843-8482 x2853
> Fax 972-991-6061
> Email: [log in to unmask]