Glossary of terms related to Evergreen and open source in general.  Created by Equinox Software, Inc. (ESI).  I found it on the Evergreen Indiana website.

6/22/10 Update:  Thanks to Bob Molyneux for directing me to the most current version of this glossary:  

http://blog.esilibrary.com/2010/06/23/an-open-source-ils-glossary-html-format/

I've "unattached" the older one from this thread so as to avoid confusion.