Neither ArcGIS Workflow Manager nor ProcessMaker offers a free trial.
ArcGIS Workflow Manager is designed for Large Enterprises, Medium Business and Small Business.
ProcessMaker is designed for Large Enterprises, Medium Business and Small Business.
Pricing for ArcGIS Workflow Manager Starts at $600/Year whereas for ProcessMaker Starts at $1,495/Month.
Some top alternatives to ArcGIS Workflow Manager includes Process Street, Microsoft Flow, ProcessMaker, IBM Blueworks Live, IBM Business Automation Workflow, ProcessPlan, ProcessPolicy.com, Bautomate, Withprocess.com and BPMapp by 500apps.
Some top alternatives to ProcessMaker includes Process Street, BP Logix BPMS, ProcessPlan, ProcessPolicy.com, Bonita, Bizagi, Withprocess.com, Tibco BPM Enterprise, BPMapp by 500apps and Camunda Platform.