head to head · open source
Docker vs Cozystack
Docker has 72,113 GitHub stars, 19,233 forks, 3,902 open issues and last shipped yesterday. Cozystack has 2,230 stars, 201 forks, 757 open issues and last shipped yesterday. Docker leads on adoption by 3,134% (72,113 vs 2,230 stars). Docker is written in Go under Apache-2.0; Cozystack is written in Go under Apache-2.0. Docker has attracted 27% as many forks as stars, Cozystack 9%. Docker was the more recently maintained of the two, and both are self-hostable with no licence fee.
Two open source projects, one decision. Both are free and self-hostable — the differences are community size, license terms, language stack and release pace.
← all 20902 open source comparisons
Side by side
| Docker | Cozystack | |
|---|---|---|
| GitHub stars | ★ 72K | ★ 2.2K |
| License | Apache-2.0 | Apache-2.0 |
| Written in | Go | Go |
| Last push | 2026-09-19 | 2026-09-19 |
| Forks | ⑂ 19K | ⑂ 201 |
| Self-hosting | Yes | Yes |
| Data ownership | Your server | Your server |
pick Docker if
- You weight community size — 72K stars and counting
- You want the Apache-2.0 license terms
- Your stack matches Go
- You value the larger contributor base for long-term maintenance
pick Cozystack if
- You want the Cozystack feature set and don't need the biggest community
- You prefer the Apache-2.0 license terms
- Your stack matches Go
- You evaluated both and Cozystack fits your workflow better
About Docker
Docker, published here as the Moby Project, is the open source collection of container toolkit components and the framework for assembling them into custom container based systems, built for engineers, integrators and enthusiasts who want to modify, hack and build on container code rather than buy a commercially supported product.
read the full Docker overview →
About Cozystack
Cozystack is a free cloud platform and framework for building clouds inside the Kubernetes ecosystem. It is a CNCF Sandbox Level project originally built and sponsored by Ænix, and it is written in Go under the Apache 2.0 license. The project turns a group of servers into an intelligent infrastructure system that exposes a simple REST API for creating and managing cloud services.
read the full Cozystack overview →
More in Infrastructure & Operations
Related comparisons
More Cloud Infrastructure Management projects
Compare either of these against the rest of the Cloud Infrastructure Management field.
Frequently asked questions
Is Docker or Cozystack more popular?
Docker has 72,113 GitHub stars and Cozystack has 2,230. Docker has the larger community by that measure.
Are Docker and Cozystack free?
Both are open source. Docker is licensed under Apache-2.0 and Cozystack under Apache-2.0. Neither carries a licence fee.
What is the difference between Docker and Cozystack?
Docker is written in Go and Cozystack in Go. The practical differences are community size, licence terms, language stack and release cadence — all compared in the table above.
Which should I choose, Docker or Cozystack?
Choose Docker if you want the larger community (72,113 stars) or its Apache-2.0 licence terms. Choose Cozystack if its feature set, stack or Apache-2.0 licence fits better. Both are self-hostable.