Apache Crimson moved into the Attic in August 2010. Apache Crimson was a Java XML parser which supports XML 1.0 via various APIs.
The website and downloads remain. There was no issue tracker nor mailing lists for the project. Contact general@xml.apache.org or general@attic.apache.org for more information.
Apache Xerces replaced Crimson.
Archived versions of Xerces may be downloaded from the Apache Archives.