Drools Flow is the best workflow solution I've met recently. It is a luxury to be better than other solutions, as it has been built and designed recently and is based on lessons learned from other long-standing, several built-in frameworks.
Drools Flow is delivered as a community project along with the official Drools 5 , which in addition to Flow includes: Guvnor, Expert and Fusion.
Unfortunately, Drools Flow does not yet have an official contract for Red Hat support, and for some large corporations this will be a traffic jam. You might think that support does not exist for political reasons, because of the jBPM project living under one roof of support.
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