GITTA is a collaborative initiative between 10 Swiss academic institutions that developed open educational content in geoinformatics between 2001-2008. The goals were to pool Swiss knowledge in this field into a shared learning pool, replace lectures with hybrid teaching, and integrate the content into university curricula. Over 40 lessons were created at basic and intermediate levels, along with case studies. The content was made publicly available in 2006 under an open license to benefit all partners. The project utilized XML and the eLML framework to implement the didactic concept and make the content technically accessible.