We're building an image management solution for Kubernetes (and possibly other orchestrators). At its heart is the Trow Registry, which runs inside the cluster, is simple to set-up and fully integrated with Kubernetes, including support for auditing and RBAC.
FRED is open-source software for running a domain and ENUM Registry, developed by CZ.NIC, the .CZ and 0.2.4.e164.arpa domain Registry.
Portus is an open source authorization service and user interface for the next generation Docker Registry.
It is an on-premise application that allows users to administrate and secure their Docker registries.
openshift-clair-controller - Openshift Controller for Clair
skopeo - Work with remote images registries - retrieving information, images, signing content
An Enterprise-class Container Registry Server based on Docker Distribution