Mouse Melon is a software application for viewing and editing data stored in the Protocol Buffers wire format. The program needs your .proto files to know the exact file format.
You can also use it as a documentation viewer and as code generator. Browse through your defined messages and gRPC methods and read your comments. Generate code for the programming language you're using by simply selecting the output directory and pressing a button.
Mouse Melon comes as a free version and a paid version. The only limitation of the free version is that you cannot use it to save/export Protocol Buffers data. Viewing documentation, generating code and viewing Protocol Buffers data files is fully functional.
Info and download: Mouse Melon