This page captures current and known future capabilities of server software that supports the Metadata Query Protocol.
- Ian Young's mdq-server reference implementation based on the Shibboleth Metadata Aggregator
- The metadata query server deployed in conjunction with the Per-Entity Metadata Pilot (mdq-beta.incommon.org) is an instance of the mdq-server technology stack
- pyff.io deployed in "daemon mode". Docker images can be found at docker-hub and a nightly(ish) build is often running at https://nightly.pyff.io
- Are there other implementations of the MDQ server protocol?