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

A majority of Cromwell users today run their workflows in Terra, a fully-managed cloud-native bioinformatics computing platform. See here for a quick-start guide.

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 feasibly provide direct support.

Cromwell's backends receive development resources proportional to customer demand. The team is actively developing for Google Cloud and AWS. Maintenance of other backends is primarily community-based.

Cromwell supports the WDL and CWL workflow languages. The Cromwell team is actively developing WDL, while maintenance for CWL is primarily community-based.

Security reports

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

Issue tracking in JIRA

Need to file an issue? Head over to our JIRA. You must create a free profile to view or create.

Issues in Github remain available for discussion among community members but are not actively monitored by the development team.