Awesome
Rescoyl Checks
This is a Docker Registry conformance client written to validate a registry implementation against the registry protocol specification.
The client itself is actually tested against the official Docker registry and the official registry behavior is more important that the specification which can be outdated.
The client is written primarily to ensure the Rescoyl registry behavior matches with the official registry but can be used to validate other implementions.
It is also possible to use this package as a library to write normal Docker registry clients.
There is also the beginning of bindings to the Docker Remote API (they should move to their own library at some point).