» Infonyte    XML database built on a PDOM and a XQL engine.    http://www.infonyte.com/

» OpenLink Virtuoso    A cross-platform, Internet data integration server, implementing native XML storage, web, file, and database server functionality and universal data access middleware as a single server solution.    http://www.openlinksw.com/virtuoso/

» TEXTML    native XML database server for content search and retrieval, supports WAP    http://www.ixiasoft.com/

» X-Hive/DB    XML Database in form of a Java-based persistent DOM implementation.    http://www.xhive.com/

» Xenos Group, Inc.    Provides data and electronic document transformation solutions.    http://www.xenos.com/

» Xyleme    Dynamic data warehouse that is an indexed XML repository capable of answering queries from applications and users.    http://www.xyleme.com/