What are some alternatives?
When comparing ProActive Workflows & Scheduling and Metaflow, you can also consider the following products
Luigi - Luigi is a Python module that helps you build complex pipelines of batch jobs.
Pipedream - Integration platform for developers
StackStorm - StackStorm is a powerful open-source automation platform that wires together all of your apps...
Apache Airflow by Airbnb.io - Airflow is a platform to programmatically author, schedule and monitor workflows
Apache Oozie - Apache Oozie Workflow Scheduler for Hadoop
Azkaban - Azkaban is a batch workflow job scheduler created at LinkedIn to run Hadoop jobs.