For several years, projects and companies dealing with Free Software in the field of Geographic Information Systems have been dedicated a special exhibition area at InterGEO, called the Open Source Park. This year, exhibitors from the open source environment will again have the opportunity to present themselves in this special area. terrestris has been using and developing free software for years and, not least against this background, has agreed to take on coordination tasks in the planning of the Open Source Park this year. For this purpose, we cooperate closely with the organizer on the one hand, but also with the companies that have carried out this work in the past years.