GraphQL.js vs GraphQL Ruby

GraphQL.js is the official JavaScript implementation of the GraphQL specification. It provides a parser, validator, executor, type system and related utilities for building GraphQL servers, clients, tools and schema workflows in JavaScript or TypeScript. Developers define a type schema and serve queries against it; the graphql function checks syntax and semantics before execution and reports invalid queries. Documentation identifies v17 as the current stable release, with v16 available for projects requiring older Node.js versions. Getting-started instructions require Node.js 22 or newer and provide installation commands for npm, pnpm, yarn and bun. The library runs in Node servers and browsers, distributes CommonJS and ESModule files, and the project says webpack and rollup builds should work. It is MIT-licensed, free, distributed through npm and intended for self-hosted deployment. Latest and previous major versions receive stated support, but no Long-Term Support version is offered.

GraphQL Ruby is a free, self-hosted Ruby gem that implements the GraphQL Server Specification for Ruby or Rails applications. It provides a self-documenting, strongly typed schema and serves queries, mutations, subscriptions, streaming responses, and multiplexed queries. Configurable depth and complexity validation can reject deeply nested or overly complex requests. Authorization tools handle schema visibility and checks on application objects during execution, while authentication is generally left to the application controller. GraphQL::Dataloader batches external data access and caches results per query; AsyncDataloader supports parallel I/O. Documentation covers Relay, Apollo Client, GraphQL.js Client, GraphiQL, urql, and custom JavaScript, plus monitoring integrations. The open-source gem is installed through RubyGems and uses the MIT license. The GraphQL Ruby gem costs nothing. GraphQL::Pro costs $1,100 a year, and GraphQL::Enterprise costs $2,400 a year under commercial licenses.