Jenkins

hard

The most widely used open-source automation server for CI/CD pipelines.

2 GB RAM min Active development

GitHub Docs Website

Pros

Massive plugin ecosystem
Extremely flexible and configurable
Battle-tested in production for decades
Huge community and documentation

Cons

Java-based and resource heavy
UI feels very dated
Groovy scripting has a learning curve
Security vulnerabilities in plugins are common

Tags

ci-cd automation pipelines java plugins

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