Distribution Registry UI vs Harbor
A side-by-side comparison of two self-hosted developer tools & git options — licensing, setup difficulty, resource needs, and what each one replaces.
Harbor
Cloud-native container registry with security
| Feature | Distribution Registry UI | Harbor |
|---|---|---|
| Deploy effort | Under-an-hour setup | Under-an-hour setup |
| Health score | 82 · Excellent | 98 · Excellent |
| Category | Developer Tools & Git | Developer Tools & Git |
| License | MIT | Apache-2.0 |
| Language | Riot | Go |
| Setup difficulty | Easy | Medium |
| Min. RAM | 128 MB | 4,096 MB |
| Deployment | docker | docker, kubernetes, helm |
| GitHub stars | ★ 3,534 | ★ 29,444 |
| First released | 2017 | 2016 |
| Replaces | Docker Hub | Docker Hub, Artifactory |
What are Distribution Registry UI and Harbor?
Distribution Registry UI
A lightweight web user interface that sits in front of the Docker Distribution registry, letting teams browse, search, and delete container images. It adds a usable front end to the bare registry API.
- Browse registry images
- Tag and digest viewing
- Image deletion
- Search across repositories
Harbor
Harbor is an open-source container registry that secures artifacts with policies, role-based access control, vulnerability scanning, and image signing. It is a CNCF graduated project.
- Private container registry
- Vulnerability scanning
- Image replication
- Role-based access control
Distribution Registry UI vs Harbor: key differences
Distribution Registry UI is written in Riot, while Harbor is built with Go. Licensing differs — MIT for Distribution Registry UI versus Apache-2.0 for Harbor. Distribution Registry UI is the lighter option, starting around 128 MB of RAM against 4,096 MB for Harbor. Harbor has the considerably larger community, at 29,444 GitHub stars versus 3,534.
Why pick each one
Choose Distribution Registry UI if…
- Adds usability to bare registry
- Tiny footprint
Watch out for
- No authentication of its own
- Requires a running registry
Choose Harbor if…
- Built-in vulnerability scanning
- Fine-grained RBAC
- CNCF graduated project
Watch out for
- Many moving components
- Notable resource usage
Frequently asked questions
Is Distribution Registry UI or Harbor better?
Neither is universally better. Harbor has the larger community, while Distribution Registry UI is simpler to set up (easy difficulty). Choose based on the comparison table above and your own setup.
Are Distribution Registry UI and Harbor free and open-source?
Yes. Distribution Registry UI is licensed under MIT and Harbor under Apache-2.0. Both can be self-hosted at no software cost.
Can I run Distribution Registry UI and Harbor with Docker?
Distribution Registry UI: yes. Harbor: yes.
Which is lighter on resources, Distribution Registry UI or Harbor?
Distribution Registry UI has the smaller minimum footprint at 128 MB of RAM, compared to about 4,096 MB for Harbor. Real-world usage depends on library size, user count, and enabled features.