Trevni is now included in Apache Avro. The Trevni specification is published at: http://avro.apache.org/docs/current/trevni/spec.html Documentation for the Java implementation of Avro is at: http://s.apache.org/trevnicoreapi http://s.apache.org/trevniavroapi Command-line tools for creating and viewing Trevni files are now included in the avro-tools.jar executable. For more information, visit the Avro project: http://avro.apache.org/