Federation-Compatible Subgraph Implementations

The following open-source GraphQL server libraries and hosted solutions support acting as a subgraph in a federated supergraph. Their support is tracked in Apollo's subgraph compatibility repository. Check out the repository for details on the compatibility tests listed in the table below.

To add a subgraph to this list, feel free to open an issue or check out the Apollo Federation Subgraph Maintainers Implementation Guide to learn how to submit a PR for your implementation!

Table Legend

Icon	Description
	Maintained by Apollo
🟢	Functionality is supported
❌	Critical functionality is NOT supported
🔲	Additional federation functionality is NOT supported

Ballerina

C# / .NET

Elixir

Go

Java / Kotlin

Library	Federation 1 Support	Federation 2 Support
dgs-framework
GraphQL for Java with Spring Boot made easy. GitHub: netflix/dgs-framework Type: SDL first Stars: 3.0k ⭐ Last Release: 2024-04-30 Core Library: GraphQL Java Federation Library: apollographql/federation-jvm	_service 🟢 @key (single) 🟢 @key (multi) 🟢 @key (composite) 🟢 repeatable @key 🟢 @requires 🟢 @provides 🟢 federated tracing 🟢	@link 🟢 @shareable 🟢 @tag 🟢 @override 🟢 @inaccessible 🟢 @composeDirective 🟢 @interfaceObject 🟢
GraphQL Java Kickstart (Spring Boot)
GraphQL and GraphiQL Spring Framework Boot Starters - Forked from oembedler/graphql-spring-boot due to inactivity. GitHub: graphql-java-kickstart/graphql-spring-boot Type: SDL first Stars: 1.5k ⭐ Last Release: 2023-12-07 Core Library: GraphQL Java Federation Library: apollographql/federation-jvm	_service 🟢 @key (single) 🟢 @key (multi) 🟢 @key (composite) 🟢 repeatable @key 🟢 @requires 🟢 @provides 🟢 federated tracing 🟢	@link ❌ @shareable 🟢 @tag 🟢 @override 🟢 @inaccessible 🟢 @composeDirective 🔲 @interfaceObject 🔲
GraphQL Kotlin
Libraries for running GraphQL in Kotlin GitHub: ExpediaGroup/graphql-kotlin Type: Code first Stars: 1.7k ⭐ Last Release: 2024-04-18 Core Library: GraphQL Java	_service 🟢 @key (single) 🟢 @key (multi) 🟢 @key (composite) 🟢 repeatable @key 🟢 @requires 🟢 @provides 🟢 federated tracing 🟢	@link 🟢 @shareable 🟢 @tag 🟢 @override 🟢 @inaccessible 🟢 @composeDirective 🟢 @interfaceObject 🟢
Spring GraphQL
Spring Integration for GraphQL GitHub: spring-projects/spring-graphql Type: SDL first Stars: 1.5k ⭐ Last Release: 2024-04-16 Core Library: GraphQL Java Federation Library: apollographql/federation-jvm	_service 🟢 @key (single) 🟢 @key (multi) 🟢 @key (composite) 🟢 repeatable @key 🟢 @requires 🟢 @provides 🟢 federated tracing 🟢	@link 🟢 @shareable 🟢 @tag 🟢 @override 🟢 @inaccessible 🟢 @composeDirective 🟢 @interfaceObject 🟢

JavaScript / TypeScript

Library	Federation 1 Support	Federation 2 Support
Apollo Server
🌍  Spec-compliant and production ready JavaScript GraphQL server that lets you develop in a schema-first way. Built for Express, Connect, Hapi, Koa, and more. GitHub: apollographql/apollo-server   Type: SDL first Stars: 13.7k ⭐ Last Release: 2024-04-18 Core Library: GraphQL.js Federation Library: Apollo Subgraph	_service 🟢 @key (single) 🟢 @key (multi) 🟢 @key (composite) 🟢 repeatable @key 🟢 @requires 🟢 @provides 🟢 federated tracing 🟢	@link 🟢 @shareable 🟢 @tag 🟢 @override 🟢 @inaccessible 🟢 @composeDirective 🟢 @interfaceObject 🟢
express-graphql
Create a GraphQL HTTP server with Express. GitHub: graphql/express-graphql Type: SDL first Stars: 6.3k ⭐ Last Release: 2020-11-19 Core Library: GraphQL.js Federation Library: Apollo Subgraph	_service 🟢 @key (single) 🟢 @key (multi) 🟢 @key (composite) 🟢 repeatable @key 🟢 @requires 🟢 @provides 🟢 federated tracing 🔲	@link 🟢 @shareable 🟢 @tag 🟢 @override 🟢 @inaccessible 🟢 @composeDirective 🔲 @interfaceObject 🔲
GraphQL Yoga
The fully featured GraphQL server with focus on easy setup, performance and great developer experience. GitHub: dotansimha/graphql-yoga Type: SDL first Stars: 8.0k ⭐ Last Release: 2024-03-29 Core Library: GraphQL.js Federation Library: Apollo Subgraph	_service 🟢 @key (single) 🟢 @key (multi) 🟢 @key (composite) 🟢 repeatable @key 🟢 @requires 🟢 @provides 🟢 federated tracing 🟢	@link 🟢 @shareable 🟢 @tag 🟢 @override 🟢 @inaccessible 🟢 @composeDirective 🟢 @interfaceObject 🟢
GraphQL Helix
A highly evolved and framework-agnostic GraphQL HTTP server. GitHub: contra/graphql-helix Type: SDL first Stars: 831 ⭐ Last Release: 2022-07-09 Core Library: GraphQL.js Federation Library: Apollo Subgraph	_service 🟢 @key (single) 🟢 @key (multi) 🟢 @key (composite) 🟢 repeatable @key 🟢 @requires 🟢 @provides 🟢 federated tracing 🔲	@link 🟢 @shareable 🟢 @tag 🟢 @override 🟢 @inaccessible 🟢 @composeDirective 🟢 @interfaceObject 🟢
Mercurius
Implement GraphQL servers and gateways with Fastify GitHub: mercurius-js/mercurius Type: SDL first Stars: 2.3k ⭐ Last Release: 2024-04-22 Core Library: GraphQL.js Federation Library: Apollo Subgraph	_service 🟢 @key (single) 🟢 @key (multi) 🟢 @key (composite) 🟢 repeatable @key 🟢 @requires 🟢 @provides 🟢 federated tracing 🔲	@link 🟢 @shareable 🟢 @tag 🟢 @override 🟢 @inaccessible 🟢 @composeDirective 🔲 @interfaceObject 🔲
NestJS (code first)
A progressive Node.js framework for building efficient, reliable and scalable server-side applications. GitHub: nestjs/graphql Type: Code first Stars: 1.4k ⭐ Last Release: 2024-02-07 Core Library: GraphQL.js Federation Library: Apollo Subgraph	_service 🟢 @key (single) 🟢 @key (multi) 🟢 @key (composite) 🟢 repeatable @key 🟢 @requires 🟢 @provides 🔲 federated tracing 🟢	@link 🟢 @shareable 🟢 @tag 🟢 @override 🟢 @inaccessible 🟢 @composeDirective 🔲 @interfaceObject 🟢
NestJS (SDL First)
A progressive Node.js framework for building efficient, reliable and scalable server-side applications. GitHub: nestjs/graphql Type: SDL first Stars: 1.4k ⭐ Last Release: 2024-02-07 Core Library: GraphQL.js Federation Library: Apollo Subgraph	_service 🟢 @key (single) 🟢 @key (multi) 🟢 @key (composite) 🟢 repeatable @key 🟢 @requires 🟢 @provides 🟢 federated tracing 🟢	@link 🟢 @shareable 🟢 @tag 🟢 @override 🟢 @inaccessible 🟢 @composeDirective 🟢 @interfaceObject 🟢
Pothos GraphQL
Plugin based GraphQL schema builder that makes building graphql schemas with TypeScript easy, fast and enjoyable. GitHub: hayes/pothos Type: Code first Stars: 2.2k ⭐ Last Release: 2024-04-17 Core Library: GraphQL.js	_service 🟢 @key (single) 🟢 @key (multi) 🟢 @key (composite) 🟢 repeatable @key 🟢 @requires 🟢 @provides 🟢 federated tracing 🟢	@link 🟢 @shareable 🟢 @tag 🟢 @override 🟢 @inaccessible 🟢 @composeDirective 🟢 @interfaceObject 🟢

PHP

Python

Ruby

Rust

Scala

Swift

Other Solutions

Library	Federation 1 Support	Federation 2 Support
AWS AppSync
Serverless GraphQL and Pub/Sub APIs	_service 🟢 @key (single) 🟢 @key (multi) 🟢 @key (composite) 🟢 repeatable @key 🟢 @requires 🟢 @provides 🟢 federated tracing 🔲	@link 🟢 @shareable 🟢 @tag 🟢 @override 🟢 @inaccessible 🟢 @composeDirective 🔲 @interfaceObject 🔲
Dgraph
Dgraph is the native GraphQL database with a graph backend. It is open-source, scalable, distributed, highly available and lightning fast.	_service ❌ @key (single) 🟢 @key (multi) 🔲 @key (composite) 🔲 repeatable @key 🔲 @requires 🔲 @provides 🔲 federated tracing 🔲	@link ❌ @shareable 🔲 @tag 🔲 @override 🔲 @inaccessible 🔲 @composeDirective 🔲 @interfaceObject 🔲
Grafbase
The GraphQL platform GitHub: grafbase/grafbase Type: Code first | SDL first Stars: 934 ⭐ Last Release: 2024-02-23	_service 🟢 @key (single) 🟢 @key (multi) 🟢 @key (composite) 🟢 repeatable @key 🟢 @requires 🟢 @provides 🟢 federated tracing 🔲	@link ❌ @shareable 🟢 @tag 🟢 @override 🟢 @inaccessible 🟢 @composeDirective 🔲 @interfaceObject 🔲
GraphQL Mesh
Executable GraphQL schema from multiple data sources, query anything, run anywhere. GitHub: Urigo/graphql-mesh Stars: 3.2k ⭐ Last Release: 2024-04-30	_service 🟢 @key (single) 🟢 @key (multi) 🟢 @key (composite) 🟢 repeatable @key 🟢 @requires 🟢 @provides 🟢 federated tracing 🟢	@link 🟢 @shareable 🟢 @tag 🟢 @override 🟢 @inaccessible 🟢 @composeDirective 🔲 @interfaceObject 🔲
Neo4J Graph Database
A GraphQL to Cypher query execution layer for Neo4j and JavaScript GraphQL implementations. GitHub: neo4j/graphql Type: Code first | SDL first Stars: 485 ⭐ Last Release: 2024-04-30 Core Library: GraphQL.js Federation Library: Apollo Subgraph	_service 🟢 @key (single) 🟢 @key (multi) 🟢 @key (composite) 🟢 repeatable @key 🟢 @requires 🟢 @provides 🟢 federated tracing 🟢	@link 🟢 @shareable 🟢 @tag 🟢 @override 🟢 @inaccessible 🟢 @composeDirective 🟢 @interfaceObject 🟢
StepZen, an IBM Company
Build GraphQL APIs for all your data in a declarative way. Federate across any data source, including GraphQL.	_service 🟢 @key (single) 🟢 @key (multi) 🟢 @key (composite) 🔲 repeatable @key 🔲 @requires 🟢 @provides 🔲 federated tracing 🔲	@link 🟢 @shareable 🟢 @tag 🟢 @override 🟢 @inaccessible 🟢 @composeDirective 🔲 @interfaceObject 🔲