This is a bit hacky and searches for repos containing the string .duckdb_extension, so it's not 100% reliable. Extensions that are not included in the DuckDB core (and are not listed in the output ...
A self-hosted, open-source, zero-commercial-key public-transport backend. It turns open data (OSM, public GTFS, a Photon dump, Overture addresses) into the map, search, and journey-planning surfaces ...