Camunda - The Universal Process Orchestrator
Nanobox - The ideal platform for developers. Focus on code, not config.
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.
Heroku - Agile deployment platform for Ruby, Node.js, Clojure, Java, Python, and Scala. Setup takes only minutes and deploys are instant through git. Leave tedious server maintenance to Heroku and focus on your code.
jBPM - jBPM is a flexible Business Process Management (BPM) Suite.
Pivotal - Pivotal Software provides enterprise PaaS-based solutions.