James Clark (programmer)

James Clark, born on 23 February 1964, is a British software engineer and the creator of various open-source software including groff, expat and several XML specifications. Born in London and educated at Charterhouse School and Merton College, Oxford, where he studied Mathematics and Philosophy, he has lived in Bangkok, Thailand since 1995 and is a permanent Thai resident. He served as technical lead of the working group that developed XML, notably contributing the self-closing empty element tag syntax and the name XML, and is the author or co-author of influential specifications and implementations including DSSSL, the Expat XML parser, XSLT, XPath, TREX and RELAX NG, whose Jing implementation he also wrote. From November 2004 until late 2006 he worked for Thailand's Software Industry Promotion Agency, promoting open source technologies and open standards, including the Thai localization of OpenOffice.org and Mozilla Firefox.