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Pipefy - Pipefy is a process management software that empowers anyone to create and automate efficient workflows on their own.
Apache Airflow - Airflow is a platform to programmaticaly author, schedule and monitor data pipelines.
CavinTek cflow - Cavintek provides cloud-based workflow management tool for small and medium enterprises to manage and automate business processes.
Pushwoosh - Push Notifications Service | Your Apps Can Talk!
Tallyfy - Cloud workflow and BPM made easy