The open-source geo-information community would like to welcome you in Middelburg on the 14th of September for the FOSS4GNL 2023! It is a beautiful venue, in the centre of this historic town. You're currently invited to enter a proposal for a presentation or workshop. We consider any interesting open source project or application that includes location, maps, or otherwise geospatially powered items. The request for presentations and workshops ends July 15 at midnight.