Airflow is a platform created by the community to programmatically author, schedule and monitor workflows.

Temporal is a microservice orchestration platform which enables developers to build scalable applications without sacrificing productivity or reliability. Temporal server executes units of application logic, Workflows, in a resilient manner that automatically handles intermittent failures, and retries failed operations.

Free IFTTT/Zapier alternative for developers to automate their workflows based on Github actions

n8n (pronounced nodemation) helps you to interconnect each and every app with an API in the world with each other to share and manipulate its data without a single line of code. It is an easy to use, user-friendly and highly customizable service, which uses an intuitive user interface for you to design your unique workflows very fast. Hosted on your server and not based in the cloud it keeps your sensible data very secure in your own trusted database.