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Jenkins
Jenkins is an open-source, extensible automation server widely used for continuous integration and continuous delivery (CI/CD). Built in Java, Jenkins helps software development teams automate repetitive tasks including code building, testing, and deployment across diverse operating systems. With an ecosystem of over 1,800 community-contributed plugins, Jenkins integrates seamlessly with version control systems and build utilities. It allows organizations to orchestrate complex software delivery pipelines at scale.
What it does
Automates continuous integration by detecting source code repository changes and executing automated builds and test suites. Orchestrates continuous delivery pipelines using Groovy-based Pipeline-as-Code definitions for complex deployment steps. Distributes build and test workloads across multiple worker nodes and cloud instances to scale build performance. Integrates with developer ecosystems via thousands of plugins spanning Git, Docker, Kubernetes, and cloud providers.
Why it works
Free and open-source model under the MIT license eliminates software licensing fees for teams of all sizes. Vast plugin ecosystem allows custom configuration for almost any technical stack or build infrastructure. Self-hosted architecture offers complete control over data privacy, internal security policies, and build environments. Proven distributed master-agent model supports enterprise scalability across heterogeneous environments.
Category: Utilities & System Tools
Team Size: 100+
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As of 2026
Utilities & System Tools
Revenue: 0-$100k ARR
Open-source CI/CD automation server for building, testing, and deploying software.
Overview
Jenkins is an open-source, extensible automation server widely used for continuous integration and continuous delivery (CI/CD). Built in Java, Jenkins helps software development teams automate repetitive tasks including code building, testing, and deployment across diverse operating systems. With an ecosystem of over 1,800 community-contributed plugins, Jenkins integrates seamlessly with version control systems and build utilities. It allows organizations to orchestrate complex software delivery pipelines at scale.
Funding status: Bootstrapped
Revenue source: Open-Source / Community Supported
Customer type: B2B
Pricing: Free (Open Source)
Tech stack: Java, Groovy, Eclipse Jetty, HTML5, JavaScript, Docker
Platform: Web
Integrations: Git, GitHub, GitLab, Docker, Kubernetes, AWS, Apache Maven, SonarQube, Jira, Slack
Founder story
Jenkins was originally created in 2004 as 'Hudson' by Kohsuke Kawaguchi while working at Sun Microsystems to avoid breaking builds. Following Sun's acquisition by Oracle and subsequent trademark disputes over the Hudson name, the developer community voted in 2011 to rename the open-source project to Jenkins. Jenkins has since evolved under the Continuous Delivery Foundation as the world's most adopted CI/CD automation server.
What it does
- Automates continuous integration by detecting source code repository changes and executing automated builds and test suites
- Orchestrates continuous delivery pipelines using Groovy-based Pipeline-as-Code definitions for complex deployment steps
- Distributes build and test workloads across multiple worker nodes and cloud instances to scale build performance
- Integrates with developer ecosystems via thousands of plugins spanning Git, Docker, Kubernetes, and cloud providers.
Who it's for
- DevOps & Platform Engineering Teams
- Enterprise Software Developers
- Build & Release Engineers
- Systems & IT Infrastructure Administrators
Why it works
- Free and open-source model under the MIT license eliminates software licensing fees for teams of all sizes
- Vast plugin ecosystem allows custom configuration for almost any technical stack or build infrastructure
- Self-hosted architecture offers complete control over data privacy, internal security policies, and build environments
- Proven distributed master-agent model supports enterprise scalability across heterogeneous environments.
Growth strategies
- Fostering an open community model under the Continuous Delivery Foundation to encourage global open- source contributions.
- Expanding the plugin ecosystem to maintain compatibility with modern technologies like Kubernetes and serverless platforms.
- Relying on commercial vendors like CloudBees to deliver enterprise support, managed security, and training.
- Providing extensive documentation, tutorials, and community forums to ease onboarding for new software engineers.
Alternatives
Comparison overview
- Jenkins is a self-hosted, highly customizable open-source automation server requiring infrastructure management, whereas cloud-native CI/CD solutions like GitHub Actions and GitLab CI/CD offer hosted execution out of the box.
- Jenkins relies heavily on its community plugin library for custom extensions, unlike all-in-one platforms that integrate version control, code review, and pipeline execution within a single unified web console.