Apache Avro Distribution Avro is a data serialization system. This distribution contains the following files: - avro-src-x.y.z.tar.gz contains the full source for Avro, including all programming language implementations, documentation source, etc. - avro-doc-x.y.z.tar.gz contains Avro's pre-built documentation. - the c/, cpp/, csharp/, java/, js/, perl/, php/, py/, and ruby/ subdirectories contain pre-built, language-specific binaries, bundles, etc. as conveniences.