Caselex was launched as a project financed by the EU Commission in 2005 (Programme IS-ECONTENT - Multiannual Community programme to stimulate the development and use of European digital content on the global networks and to promote linguistic diversity in the Information Society 2001-2005, Grant agreement ID: 11218). It was founded by Stig Marthinsen, with Marc de Vries as project technical coordinator. Stig Marthinsen left the firme in 2011.
