* [protoc-gen-validate (PGV) v1.3.3](https://github.com/bufbuild/protoc-gen-validate) – Protoc plugin generating message validators from proto field annotations for multiple languages.

* [protoc-gen-connect-openapi v0.25.5](https://github.com/sudorandom/protoc-gen-connect-openapi) – Generates OpenAPI v3.1 specs from protobufs for services implementing the Connect RPC protocol.