use imixs-workflow for my own projects
BonitaSoft - Bonita BPM is a BPM-based application platform that is designed to help users build highly...
asciiflow - Infinite ASCII diagrams, save to Google Drive, resize, freeform draw, and export straight to text/html.
Activiti - Activiti is a light-weight workflow and Business Process Management (BPM) Platform targeted at...
PabloDraw - PabloDraw is an Ansi/Ascii text and RIPscrip vector graphic art editor/viewer with multi-user capabilities.
Camunda - The Universal Process Orchestrator
JavE - JavE (Java Ascii Versatile Editor) is a free Ascii Editor.