District of Columbia Open Data vs Open Government, ACT

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.

Data.act.gov.au is the Australian Capital Territory's open-data portal, run on Socrata; its catalog discovery API at `www.data.act.gov.au/api/catalog/v1` answers keyless GETs with full dataset JSON and a wildcard `Access-Control-Allow-Origin` header (the bare `data.act.gov.au` apex briefly redirects through plain HTTP before landing back on the `www` host over HTTPS, so link to `www` directly). Individual datasets are queryable through Socrata's SODA API in JSON or CSV, covering ACT government services, planning, and community data.