Government · head-to-head
City, Gdańsk vs District of Columbia Open Data
Otwarty Gdańsk (Open Gdańsk) runs a standard CKAN 2.x installation; a live keyless GET against `ckan.multimediagdansk.pl/api/3/action/package_search` returned full JSON dataset metadata with a wildcard `Access-Control-Allow-Origin` header on both the plain response and an OPTIONS preflight. The catalogue covers Gdańsk municipal transit, budget, and environmental datasets, with individual resources downloadable as CSV, JSON, or XLSX depending on the publisher.
Open Data DC is the District of Columbia government's catalogue of public datasets, spanning crime incidents, GIS/mapping layers, and financial and demographic data, published on an Esri ArcGIS Hub site. Datasets are queryable keyless through the Hub's search and DCAT feed APIs and through individual ArcGIS Feature/Map Services, returning JSON, GeoJSON, CSV, or shapefile depending on the layer. No account or API key is required to read data.
| City, Gdańsk | District of Columbia Open Data | |
|---|---|---|
| Authentication | None | None |
| Pricing | free | free |
| Formats | JSON, CSV, XLSX | JSON, GeoJSON, CSV, Shapefile |
| CORS | yes | yes |
| HTTPS | Yes | Yes |
District of Columbia Open Data supports 4 response formats, while City, Gdańsk offers fewer — pick District of Columbia Open Data for more integration flexibility.