prost

Generates clean, readable Rust types using derive attributes, as shown in the example where messages become structs with proper enums and modules.

Retains comments from .proto files in the generated Rust code, improving documentation without extra effort.

Supports embedded systems with feature flags to disable std, allowing use in resource-constrained environments.

Enables serialization of custom Rust types via attributes, so you don't need to generate code for every data structure.