Overture

Integrates and standardizes multiple data sources, combining 200+ sources including OSM, government, enterprise, and open data. It merges

OpenStreetMap with other map databases into a standardized layer that is ready for product use. It also provides GERS, a persistent real-world entity ID system. Overture is designed from the start to conflate data from multiple sources. Licensing varies by theme and source: available data may be CDLA-Permissive, while OSM-based themes may use ODbL, so licensing is mixed by theme/source.