Objection.js

Objection.js is an ORM (Object Relational Mapper) built on top of knex for Node.js. Objection.js aims to stay out of your way and make it as easy as possible to use the full power of SQL and the underlying database engine while still making the common stuff easy and enjoyable. Even though ORM is the best commonly known acronym to describe objection, a more accurate description is to call it a relational query builder. With Objection.js you get all the benefits of an SQL query builder but also a powerful set of tools for working with relations.

Objection.js is a free and open-source ORM.