Full petri net features.
Both approval workflow and business workflow.
Simple web admin for workflow definition and case management.
Build-in simple dynamic form.
Replaceable dynamic form.
Graph screen for workflow definition.
Graph screen for case and token migration.
Powerful guard expression.
MySQL and Postgres Support.
Powerful assignment management.
Flexible integration of organizational structure system(role, group, position or department etc.)
Graph Editor for workflow definition.
Workflow soundness checking.
More doc and demo app.