The preferred way of getting Cromwell releases is at the GitHub Releases page. You are strongly encouraged to use the latest release of Cromwell whenever possible.
Mac users with Homebrew can also get Cromwell with the command
brew install cromwell.
This documentation frequently refers to a "Cromwell jar" with a name like
This is the main artifact in Cromwell releases that contains all executable Cromwell code and default configuration.
Java 8 is required to run Cromwell.