Jean Delahousse, born in 1958, graduated from ESCP (France). He worked for Andersen Consulting, the Paris Stock Exchange and Diagram (a financial software company). He created BDB, a financial software company, in 1993. Since 1999, he has been CEO and co-founder of MONDECA, a software company dedicated to content organization and content access solutions based on Topic Maps. Jean Delahousse has a wide experience of software design and marketing. He was one of the cofounders of the XTM authoring group and belongs to the board of XML France. Merging knowledge engineering, graph theory and XML knowledge representation standards into useful tools for end-users within the entreprise is his main concern today