head to head · open source
Docker vs Cozystack
Docker has 72,238 GitHub stars, 19,309 forks, 3,902 open issues and last shipped yesterday. Cozystack has 2,381 stars, 216 forks, 757 open issues and last shipped today. Docker leads on adoption by 2,934% (72,238 vs 2,381 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%. Cozystack 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.
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Side by side
| Docker | Cozystack | |
|---|---|---|
| GitHub stars | ★ 72K | ★ 2.4K |
| License | Apache-2.0 | Apache-2.0 |
| Written in | Go | Go |
| Last push | 2026-11-03 | 2026-11-04 |
| Forks | ⑂ 19K | ⑂ 216 |
| 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
The Moby Project ================ Moby is an open source project created by Docker to enable and accelerate software containerization. It provides a "Lego set" of toolkit components, the framework for assembling them into custom container based systems, and a place for all container enthusiasts and professionals to experiment and exchange ideas. Components include container build tools, a container registry, orchestration tools, a runtime and more, and these can be used as building blocks in conjunction with other tools and projects. Principles Moby is an open project guided by strong principles, aiming to be…
read the full Docker overview →
About Cozystack
Cozystack Cozystack is a free platform and framework for building clouds. Cozystack is a CNCF Sandbox Level Project that was originally built and sponsored by Ænix. With Cozystack, you can transform a bunch of servers into an intelligent system with a simple REST API for spawning Kubernetes clusters, Database as a Service, virtual machines, load balancers, HTTP caching services, and other services with ease. Use Cozystack to build your own cloud or provide a cost effective development environment. Use Cases Using Cozystack to build a public cloud You can use Cozystack as a backend for a public cloud Using…
read the full Cozystack overview →
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Frequently asked questions
Is Docker or Cozystack more popular?
Docker has 72,238 GitHub stars and Cozystack has 2,381. 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 (72,238 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.