The Common Workflow Language (CWL) is a widely supported, open source, vendor neutral specification for workflow descriptions. Because there are a wide variety of executors that support CWL, the same CWL document will run on a laptop, on HPC clusters, on raw cloud infrastructure and on a variety of cloud platforms. See the current list of implementations that support CWL here.
CWL documents are text files describing computational steps. CWL written in YAML format is compact and easily read by users. While some users are comfortable creating CWL workflows "by hand" using a text editor, others may prefer Rabix Composer: a powerful, open source, graphical editor allowing visual programming in CWL. Rabix Composer enables a user to quickly create complex CWL workflows without having to remember the details of CWL syntax.
CWL-SVG is a Typescript library for visualization of Common Workflow Language workflows. It can be easily integrated into a website or typescript application to show interactive views of a CWL workflow.
CWL-SVG is used in variety of projects including Data Science and Bioinformatics Research Group's Omics Dashboard, Arvados workbench, Vue CWL, the Datirium platform, and, of course, Rabix Composer.
Rabix Executor is a workflow runner that can execute CWL sbg:draft2 and CWL 1.0 pipelines. It has support for the TES API and can be used in a limited manner to run pipelines on cloud infrastructure. [PubMed, bioRxiv]
When the Rabix project was in it's infancy and the CWL specification was just being developed (ca. 2014-2016) Rabix Executor was the only executor capable of running CWL. It proved invaluable as a test bed for ideas for the specification that evolved into CWL and as a living implementation of the specification.
There are now many modern CWL executors for every conceivable platform. Rabix Executor is now in maintenance mode. Rabix Executor remains a stable local test runner for those people wishing to run sbg:draft2 pipelines locally, but no new features will be added to it.
SevenBridges is passionate about open standards in science and about providing high quality open source developer tooling around those standards. Rabix (a portmanteau of "Reproducible Analyses for Bioinformatics") was founded by SevenBridges in 2015 to support this mission. The Rabix team plays a key role in developing CWL and tooling around CWL.