Last weekend I once again attended the bi-annual OSM Hack Weekend in Karlsruhe hosted by Geofabrik. I’ve also been at the OSM Hack Weekend in Berlin hosted at Wikimedia Deutschland a couple of weeks ago and haven’t written about that yet, so this is the combined report for both events.
This is a companion discussion topic for the original entry at https://www.volkerkrause.eu/2025/11/15/osm-hack-weekends-berlin-karlsruhe-october-november-2025.html