Private Docker Registry is for organizations with multiple users, teams and projects in a LDAP/AD environment with unlimited private repositories.
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Pro Free for up to 3 images
Free for up to 3 images and one user, the next plan costs 39€ per month for unlimited users / repositories.
Pro Multiple namespaces
Multiple namespaces can be defined, for each project or team.
Pro Dedicated hardware and lightning fast
Docker Hub is extremely slow. Here you get a 300Mbit/s dedicated line.
Pro Integration with LDAP, Active Directory and OAuth
Not everyone provides this feature in its basic plan. If it is there, the plan starts at 500$ minimum.
Pro Unlimited amount of private repositories
The only provider providing this option in the basic plan.