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a tool Stripe developed for live-replicating data from a MongoDB database into a PostgreSQL database. With MoSQL, you can run applications against a MongoDB database, but also maintain a live-updated mirror of your data in PostgreSQL, ready for querying with the full power of SQL.

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ql.io combines SQL, and JSON into an imperative style language. Scripts written in this language can make HTTP requests to retrieve data, perform joins between API responses, project responses, or even make requests in a loop. But note that ql.io’s scripting language is not SQL - it is SQL inspired.