When comparing Docker Hub vs Quay.io, the Slant community recommends Quay.io for most people. In the question“What are the best docker image private registries?” Quay.io is ranked 10th while Docker Hub is ranked 19th. The most important reason people chose Quay.io is:
Quay.io has a beutiful and easy to understand web based UI.
Ranked in these QuestionsQuestion Ranking
Pros
Pro Shares user accounts with the dominant public registry, Docker Hub
Pro Web based UI
Quay.io has a beutiful and easy to understand web based UI.
Pro Most prominent alternative to Docker Hub
Quay was started by two Google engineers to serve as an alternative to Docker Hub. It was later acquired by CoreOS.
Cons
Con No longer free
Rate limits on downloads can royally screw your deployments. In 2021, they will start deleting containers which haven't been pulled for six months. This will suck for stable software which doesn't get redeployed frequently.
Con Gives no metadata about image tags beyond their name
No information about when the image was created, pushed, what Dockerfile it came from, what user(s) pushed it, etc.
Con Poor user interface design
Con Default to public makes it dangerous
Since by default your account will create new repositories publicly, you could fairly easily leak sensitive images with one bad push.
Con Acquired company
CoreOS bought Quay and redirected their energies to the CoreOS Enterprise Registry, so this product might not be here for the duration.
