Concourse CI vs Jenkins
A side-by-side comparison of two self-hosted ci/cd & build options — licensing, setup difficulty, resource needs, and what each one replaces.
Jenkins
Extensible open-source automation server for CI/CD
| Feature | Concourse CI | Jenkins |
|---|---|---|
| Deploy effort | Under-an-hour setup | Under-an-hour setup |
| Health score | 92 · Excellent | 97 · Excellent |
| Category | CI/CD & Build | CI/CD & Build |
| License | Apache-2.0 | MIT |
| Language | Go | Java |
| Setup difficulty | Hard | Medium |
| Min. RAM | 2,048 MB | 1,024 MB |
| Deployment | docker, kubernetes, helm | docker, bare-metal, helm |
| GitHub stars | ★ 7,906 | ★ 26,581 |
| First released | 2014 | 2011 |
| Replaces | Jenkins, CircleCI | CircleCI |
What are Concourse CI and Jenkins?
Concourse CI
Concourse is an open-source CI/CD system built around the principles of declarative pipelines and reproducible builds. Every task runs in an isolated container for consistent, debuggable builds.
- Declarative YAML pipelines
- Container-isolated tasks
- Visual pipeline graph
- Resource-based design
Jenkins
Jenkins is a widely used open-source automation server for building, testing, and deploying software, with a vast plugin ecosystem. It targets teams with complex or legacy CI/CD pipelines. It is deployed via Docker, WAR file, or native packages.
- Thousands of plugins
- Pipeline as code with Jenkinsfile
- Distributed build agents
- Huge community
Concourse CI vs Jenkins: key differences
Concourse CI is written in Go, while Jenkins is built with Java. Licensing differs — Apache-2.0 for Concourse CI versus MIT for Jenkins. Jenkins is the lighter option, starting around 1,024 MB of RAM against 2,048 MB for Concourse CI. Jenkins is the more established project (first released 2011), while Concourse CI arrived in 2014. Jenkins has the considerably larger community, at 26,581 GitHub stars versus 7,906.
Why pick each one
Choose Concourse CI if…
- Reproducible builds
- Strong isolation
Watch out for
- Steep learning curve
Choose Jenkins if…
- Extremely flexible
- Massive plugin ecosystem
- Battle-tested
Watch out for
- Plugin management can be painful
- Dated user interface
Frequently asked questions
Is Concourse CI or Jenkins better?
Jenkins is the stronger all-round pick: it has both the larger community and the simpler medium setup. Consider Concourse CI if its specific feature set fits your needs better.
Are Concourse CI and Jenkins free and open-source?
Yes. Concourse CI is licensed under Apache-2.0 and Jenkins under MIT. Both can be self-hosted at no software cost.
Can I run Concourse CI and Jenkins with Docker?
Concourse CI: yes. Jenkins: yes.
Which is lighter on resources, Concourse CI or Jenkins?
Jenkins has the smaller minimum footprint at 1,024 MB of RAM, compared to about 2,048 MB for Concourse CI. Real-world usage depends on library size, user count, and enabled features.