ProtoCat
JSON →ProtoCat is a modern, minimalist type-safe gRPC framework for Node.js, currently at version 0.6.5-beta.1. It provides a clean middleware-based API for building gRPC services with full TypeScript support. Unlike alternatives like Mali, ProtoCat emphasizes simplicity and type safety out of the box. The project is still in beta, with active development but no stable release yet. Release cadence is irregular as it's a newer project. Key differentiators include automatic type inference from generated protobuf definitions and a lightweight footprint.