head to head · open source
jenkins vs Cozystack
jenkins has 26,719 GitHub stars, 9,819 forks, 3,610 open issues and last shipped yesterday. Cozystack has 2,381 stars, 216 forks, 757 open issues and last shipped yesterday. jenkins leads on adoption by 1,022% (26,719 vs 2,381 stars). jenkins is written in Java under MIT; Cozystack is written in Go under Apache-2.0. jenkins has attracted 37% 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. The two share 1 topic tag (hacktoberfest), so they are genuine substitutes rather than adjacent tools.
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
| jenkins | Cozystack | |
|---|---|---|
| GitHub stars | ★ 27K | ★ 2.4K |
| License | MIT | Apache-2.0 |
| Written in | Java | Go |
| Last push | 2026-11-02 | 2026-11-02 |
| Forks | ⑂ 9.8K | ⑂ 216 |
| Self-hosting | Yes | Yes |
| Data ownership | Your server | Your server |
pick jenkins if
- You weight community size — 27K stars and counting
- You want the MIT license terms
- Your stack matches Java
- 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 jenkins
Table of Contents About What to Use Jenkins for and When to Use It Downloads Getting Started (Development) Source Contributing to Jenkins News and Website Governance Adopters License About In a nutshell, Jenkins is the leading open source automation server. Built with Java, it provides over 2,000 plugins to support automating virtually anything, so that humans can spend their time doing things machines cannot. What to Use Jenkins for and When to Use It Use Jenkins to automate your development workflow, so you can focus on work that matters most. Jenkins is commonly used for: Building projects Running tests to…
read the full jenkins 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 jenkins or Cozystack more popular?
jenkins has 26,719 GitHub stars and Cozystack has 2,381. jenkins has the larger community by that measure.
Are jenkins and Cozystack free?
Both are open source. jenkins is licensed under MIT and Cozystack under Apache-2.0. Neither carries a licence fee.
What is the difference between jenkins and Cozystack?
jenkins is written in Java 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, jenkins or Cozystack?
Choose jenkins if you want the larger community (26,719 stars) or its MIT licence terms. Choose Cozystack if its feature set, stack or Apache-2.0 licence fits better. Both are self-hostable.