Open Government Data Directory
A comprehensive guide to government data portals, open data standards, and practical resources for accessing and working with public datasets from the US and around the world.
Data Portals
Government open data portals providing free access to public datasets.
US Federal Data Portals
Data.gov, Census Bureau, BLS, BEA, FRED, USDA, EPA, and NOAA. APIs, bulk downloads, and dataset catalogs from US federal agencies.
8 portals documentedInternational Data Portals
UK, EU, Canada, Australia, World Bank, UN Data, and OECD open data platforms. Cross-border data access and comparison.
7 portals documentedOpen Data Standards
Technical standards and platforms that power open government data catalogs.
DCAT Vocabulary
W3C Data Catalog Vocabulary for describing datasets. Classes, properties, JSON-LD serialization, and the DCAT-AP European application profile.
W3C RecommendationCKAN Platform
Comprehensive Knowledge Archive Network. Architecture, data model, API endpoints, extensions, and deployment guide for the leading open data platform.
Open Source PlatformPractical Guides
Step-by-step guides for accessing, evaluating, and working with open government data.
API Access
API key registration, rate limiting, pagination patterns, and data format handling across government data providers.
Data Quality
Quality assessment frameworks for open data: completeness, accuracy, timeliness, consistency, and metadata quality scoring.
Open Data Licenses
CC0, CC-BY, ODbL, Open Government License, and public domain. Comparison of attribution, share-alike, and commercial use terms.