Welcome to Cromwell

Cromwell is an open-source Workflow Management System for bioinformatics. Licensing is BSD 3-Clause.

The Cromwell documentation has a dedicated site.

First time to Cromwell? Get started with Tutorials.

Community

Thinking about contributing to Cromwell? Get started by reading our Contributor Guide.

Cromwell has a growing ecosystem of community-backed projects to make your experience even better! Check out our Ecosystem page to learn more.

Talk to us:

• Join the Cromwell Slack workspace to discuss the Cromwell workflow engine.
• Join the OpenWDL Slack workspace to discuss the evolution of the WDL language itself.
  • More information about WDL is available in that project's repository.

Capabilities and roadmap

Many users today run their WDL workflows in Terra, a managed bioinformatics platform with built-in Cromwell support.

Users with specialized needs who wish to install and maintain their own Cromwell instances can download a JAR or Docker image. The development team accepts reproducible bug reports from self-managed instances, but cannot provide direct support.

Cromwell uses modular backends to support different cloud vendors. The team is currently developing for AWS Batch and GCP Batch. Maintenance of other backends is community-based.

Cromwell supports the WDL workflow language. Cromwell version 80 and above no longer support CWL.

Security reports

If you believe you have found a security issue please contact infosec@broadinstitute.org.

Issue tracking

Need to file an issue? Head over to Github Issues.