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Comparison of SGML and XML - http://www.w3.org/TR/NOTE-sgml-xml
A Note from the W3C detailing the differences and similarities between the two markup languages. |
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The SGML/XML Web Page - http://xml.coverpages.org/sgml-xml.html
Database containing over 2000 documents pertaining to SGML, XML, and related standards. Features a bibliography for SGML, vendors and service providers, software reviews, mailing lists, user groups, and projects. |
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SP - http://www.jclark.com/sp/
A free, object-oriented toolkit for SGML parsing, validating, and entity management. |
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Overview of SGML Resources - http://www.w3.org/MarkUp/SGML/
SGML links at the W3C, meant for use in reviews of the HTML specification. |
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SGMLtools-Lite - http://sgmltools-lite.sourceforge.net/
Formerly Linuxdoc-SGML, SGMLtools offers a out-of-the-box SGML processing solution for technical (DocBook) documentation. [Open source, GPL] |