Splitgraph is a unified interface to discover and query data. The public "Data Delivery Network" (DDN) looks like a giant Postgres database with 40,000 tables in it.
When you SELECT (or JOIN) from those tables, Splitgraph routes your query to an upstream data source. That could be a live data source (like one of hundreds of government open data portals). Or it could be a versioned snapshot called a "data image," a Docker-inspired format for storing columnar, immutable, delta-compressed, content-addressable fragments of data.
We have a private beta program for self-hosted or managed deployments. We make your disparate data discoverable and queryable, by providing you a white-labeled data catalog and a Postgres-compatible query endpoint.