GraphQL - GraphQL is a data query language and runtime to request and deliver data to mobile and web apps.
Apollo - Apollo is a full project management and contact tracking application.
JsonAPI - Application and Data, Languages & Frameworks, and Query Languages
Django REST framework - Django REST framework is a toolkit for building web APIs.
graphql.js - A reference implementation of GraphQL for JavaScript - graphql/graphql-js
RAML - RAML is a solution that manages an API lifecycle from design to sharing.