The main features of src-d/proteus are: Language Specific Libraries, Language Specific Tools.
Open-source alternatives to src-d/proteus include: fiorix/protoc-gen-cobra. google/grpc-kapt. bsm/grpclb. dialogs/grpc-web-gateway. google/go-microservice-helpers. google/rejoiner — Generates a unified GraphQL schema from gRPC microservices and other Protobuf sources.