781. CL-XML
     CL-XML is an XML parser
782. cl-xml-parser
     An XML parser in Common Lisp
783. cl-xmlspam
     XML Stream PAttern Matcher - concise, regexp-like pattern matching on streaming XML
784. cl-xmpp
     cl-xmpp is an XMPP client implementation of RFCs 3920 and 3921 which can be thought of as the basis of any Jabber-compliant client
785. cl-xspf
     A Common Lisp API for writing XSPF open XML playlists
786. cl-xul
     Mozilla XUL bindings for Common Lisp
787. CL-Yacc
     CL-Yacc is a LALR(1) parser generator for Common Lisp, somewhat like Zebu or lalr.cl.
788. cl-yaclyaml
     Yet Another Common Lisp YAML processor
789. cl-yahoo
     CL-YAHOO is a Common Lisp interface to the Yahoo! API, a web API which enables searching the web through yahoo
790. cl-yaml
     A YAML parser and emitter built on top of libyaml

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