Jenkins is a self-contained Java-based program, ready to run out-of-the-box, with packages for Windows, Mac OS X and other Unix-like operating systems. Developed by R.Tyler Croy
License: Open Source
Jenkins is an open-source automation server that provides extensive customization and a rich plugin ecosystem, making it suitable for complex build pipelines. In contrast, Buildkite is a cloud-based CI/CD service that offers ease of use, scalability, and built-in support for modern containerized environments, making it ideal for teams looking for a streamlined setup.