The Protocol Buffers ecosystem stretches far beyond Google's official compiler. Below is an interactive explorer showcasing the most popular tools, plugins, and serialization libraries used by developers to compile, lint, format, validate, and transport Protobuf messages. Missing a tool or library? Submit a project to help grow the registry.
protoc-gen-doc
BY pseudomuto
Generates HTML, Markdown, or PDF documentation from .proto files.
protocompile
BY bufbuild
Protobuf compiler engine written in Go, implementing parsing, linking, and descriptor compilation.
protoc-gen-connect-openapi
BY sudorandom
Produces OpenAPI 3.x definitions from Protobuf services, with support for ConnectRPC and gRPC-Gateway.
protoc-gen-validate
BY bufbuild
Protoc compiler plugin that generates polymorphic validation rules for Go, Java, C++, and Python schemas.
ProtoBuf.js
BY dcodeIO
JavaScript library for serializing and deserializing Protobuf messages in Node and browser environments.
gRPCui
BY fullstorydev
Interactive web UI for exploring and testing gRPC services from the browser.
gogo-protobuf
BY gogo
Deprecated Protocol Buffers implementation for Go, extended with code-generation "gadgets."
protobuf-net
BY protobuf-net
Contract-based serialization library for .NET implementing the Protocol Buffers wire format.