There are 2 repositories under protobuf-parser topic.
Yet another Go package which parses a Protocol Buffer file (proto2+proto3)
A starter kit for building protoc plugins. Rather than write your own, you can just use an existing one.
Iterate over Protobuf messages while decoding on the fly
ProtoBuf Java Parser and FileDescriptor Builder
protobuf的python版本简单编译器,可编译输出ios、android、typescript使用的model,以及对应的sql语句模板、message包含的字段名常量类(java版)