I saw a post on a mailing list from Adam Retter with the following news:
I would just like to let you all know that the Release Candidate for eXist-db 1.4.1 is out, this is the culmination of two years of hard work. We take our releases very seriously!
eXist-db is all about XML, indexing and querying. We provide various indexes including full-text indexing of structured, semi-structured and un-structured content. Our unit of storage is the Document, XML or Binary. We can also extract and make searchable content from Binary Documents.
Not only is eXist-db an OpenSource XML Native Database, its also a fully fledged web application platform for XRX applications, so don’t let the ‘-db’ bit fool you.
Had not meant to be neglecting the XML databases. You are going to encounter them in a number of contexts, either as storing data you need or as repositories you address from within a topic map.