Dagger 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 | Dagger | Jenkins |
|---|---|---|
| Deploy effort | Under-an-hour setup | Under-an-hour setup |
| Health score | 95 · Excellent | 97 · Excellent |
| Category | CI/CD & Build | CI/CD & Build |
| License | Apache-2.0 | MIT |
| Language | Go | Java |
| Setup difficulty | Medium | Medium |
| Min. RAM | 1,024 MB | 1,024 MB |
| Deployment | docker, binary | docker, bare-metal, helm |
| GitHub stars | ★ 16,298 | ★ 26,581 |
| First released | 2022 | 2011 |
| Replaces | GitHub Actions, CircleCI | CircleCI |
What are Dagger and Jenkins?
Dagger
Dagger is an open-source CI/CD engine that lets developers define pipelines as code in their preferred language and run them anywhere with a containerized engine. It can be self-hosted to power portable build pipelines.
- Pipelines as code
- Runs anywhere with containers
- Multi-language SDKs
- Built-in caching
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
Dagger vs Jenkins: key differences
Dagger is written in Go, while Jenkins is built with Java. Licensing differs — Apache-2.0 for Dagger versus MIT for Jenkins. Jenkins is the more established project (first released 2011), while Dagger arrived in 2022.
Why pick each one
Choose Dagger if…
- Pipelines as real code
- Runs identically anywhere
- Container-level caching
Watch out for
- New concepts to learn
- Container runtime required
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 Dagger or Jenkins better?
Neither is universally better. Jenkins has the larger community; both share a medium setup difficulty, so the decision comes down to features and licensing.
Are Dagger and Jenkins free and open-source?
Yes. Dagger is licensed under Apache-2.0 and Jenkins under MIT. Both can be self-hosted at no software cost.
Can I run Dagger and Jenkins with Docker?
Dagger: yes. Jenkins: yes.