Wire - Clean, lightweight protocol buffers for Android and Java.

Schemas describe and document data models. If you have data, you should have a schema. Google's Protocol Buffers are built around a great schema language. It's cross platform and language independent. Whatever programming language you use, you'll be able to use proto schemas with your application. Proto schemas are backwards-compatible and future-proof. You can evolve your schema as your application loses old features and gains new ones.

Why Wire?
The Protocol Buffers schema language and binary encoding are both defined by Google. Wire is an independent implementation from Square that's specifically designed for Android and Java. For each message type defined in the schema, Wire generates an immutable model class and its builder. The generated code looks like code you'd write by hand: it's documented, formatted, and simple. Wire's APIs should feel at home to programmers who like Effective Java.