Lars Marius Garshol is currently Development Manager at Ontopia, a leading topic map software vendor. He has been active in the XML and topic map communities as a speaker, consultant, open source developer, and technology creator for a number of years. He has worked with content management using SGML and XML since 1997, and using topic maps since 1999.

Lars Marius has also been responsible for adding Unicode support to the Opera web browser. His book on 'Definitive XML Application Development', was published by Prentice-Hall in its Charles Goldfarb series earlier this year. Lars Marius is one of the editors of the ISO Topic Map Query Language standard, and also co-editor of the Topic Map data model. He also chairs the OASIS GeoLang TC.