Zapier - Connect the apps you use everyday to automate your work and be more productive. 1000+ apps and easy integrations - get started in minutes.
Microsoft Flow - Similar to IFTTT and Zapier you can create automated tasks based on APIs from various services.
Apache Airflow - Airflow is a platform to programmaticaly author, schedule and monitor data pipelines.
Pipefy - Pipefy is a process management software that empowers anyone to create and automate efficient workflows on their own.
Pushwoosh - Push Notifications Service | Your Apps Can Talk!
Process Street - Create beautiful rich process documents in a simple to follow checklist format. Fast, free and incredibly simple to use.