Camunda - The Universal Process Orchestrator
Apache Camel - Apache Camel is a versatile open-source integration framework based on known enterprise integration patterns.
jBPM - jBPM is a flexible Business Process Management (BPM) Suite.
Apache Kafka - Apache Kafka is an open-source message broker project developed by the Apache Software Foundation written in Scala.
ProcessMaker - ProcessMaker is an easy to use BPM and workflow software solution. It is used to design, automate, and deploy business processes of any kind.
Zapier - Connect the apps you use everyday to automate your work and be more productive. 1000+ apps and easy integrations - get started in minutes.