GIS-Akademie Geocoder
Geocodes German addresses from CSV, Excel, OpenDocument (.ods) or tab-separated files against a local database of official house coordinates for all 16 German states, with Nominatim as an optional fallback. Can run fully offline (GDPR mode).
Geocodes address tables (CSV, Excel .xlsx/.xls, OpenDocument .ods, tab-separated) and writes the result as a GeoPackage layer. Addresses are matched against a local SQLite database of official German house coordinates (Hauskoordinaten) with fuzzy search; addresses without a local match can optionally be sent to Nominatim (OpenStreetMap). In GDPR mode no address ever leaves the computer.
The local database is built inside the plugin: one click downloads the official open data of all 16 German states and imports it — only when there is new data. The plugin handles the states' different services (fixed downloads, feeds, INSPIRE WFS, OGC API Features, per-district ALKIS GeoPackages, job-based download clients). Bavaria is loaded from an OpenStreetMap extract (Geofabrik) because official addresses are not free there. Users can also register their own files (HK-DE text, INSPIRE GML, shapefile or OpenStreetMap extract) per state. The list of sources can be updated online from this repository without a new plugin version.
Missing postcodes are added automatically from the bundled postcode areas (derived directly from OpenStreetMap, © OpenStreetMap contributors, ODbL).
Requirements: none beyond QGIS (uses GDAL/OGR from QGIS). Optional: reading old Excel .xls files needs the Python package xlrd (OSGeo4W Shell: python -m pip install xlrd). Region: Germany only. The user interface and documentation are in German.
Data licences: official house coordinates dl-de/by-2-0, Berlin dl-de/zero-2-0, Bremen, Niedersachsen, Schleswig-Holstein and Thüringen CC BY 4.0; OpenStreetMap data and the bundled postcode areas ODbL 1.0. Please follow the attribution rules of each source (see the built-in help).
Deutsch: Geocodiert Adresstabellen gegen amtliche Hauskoordinaten aller 16 Bundesländer (lokal, optional DSGVO-konform ohne Online-Abfrage), lädt und aktualisiert die Open-Data-Quellen der Länder selbst und ergänzt fehlende Postleitzahlen aus mitgelieferten PLZ-Gebieten.