Homepage: http://flowable.org/
- a compact and highly efficient workflow and Business Process Management (BPM) platform for developers, system admins and business users.
- a lightning fast, tried and tested BPMN 2 process engine written in Java. It is Apache 2.0 licensed open source, with a committed community.
- can run embedded in a Java application, or as a service on a server, a cluster, and in the cloud. It integrates perfectly with Spring. With a rich Java and REST API, it is the ideal engine for orchestrating human or system activities.
Flowable is distributed under the Apache V2 license (http://www.apache.org/licenses/LICENSE-2.0.html).
The Flowable downloads can be found on http://flowable.org/downloads.html.
The distribution contains most of the sources as jar files. The source code of Flowable can be found on https://github.com/flowable/flowable-engine.
Flowable runs on a JDK higher than or equal to version 7. Go to http://www.oracle.com/technetwork/java/javase/downloads/index.html and click on button "Download JDK". There are installation instructions on that page as well. To verify that your installation was successful, run "java -version" on the command line. That should print the installed version of your JDK.
Contributing to Flowable: https://github.com/flowable/flowable-engine/wiki.
Every self-respecting developer should have read link on how to ask smart questions: http://www.catb.org/~esr/faqs/smart-questions.html.
After you've done that you can post questions and comments on http://forum.flowable.org and create issues in https://github.com/flowable/flowable-engine/issues.
There's a Jenkins server running the Flowable unit tests on http://qa.flowable.org.