* [Misskey 2026.3.0](https://github.com/misskey-dev/misskey) – Federated social media platform with open source and free usage.

* [gRPC Federation v1.24.0](https://github.com/mercari/grpc-federation) – Generates BFF gRPC servers via Protocol Buffer custom options, aggregating and optimizing microservice calls.

* [Bramble v1.4.19](https://github.com/movio/bramble) – Production-ready GraphQL federation gateway with support for shared types, namespaces, permissions, plugins, and hot configuration reloading.

* [Apollo Federation @apollo/gateway@2.9....](https://github.com/apollographql/federation) – Architecture for composing APIs into a unified graph with independent team ownership.