terrestris GmbH & Co. KG offers services and products with open source software. It focuses in particular on the processing and presentation of spatial data with geographic information systems (GIS) in all their forms. It focuses on the requirements of its customers and offers solutions tailored to their specific needs. It is based on proven and widely used open source technologies in combination with OGC and open standards as well as free data. Based on this, innovative and tailor-made solutions are developed, which often interact with other systems.