RunaWFE Free
is low code bpm platform, which is easy to install and easy to use
...Thanks to RunaWFE web interface users can receive, filter, perform and delegate the tasks of business process instances, start new business process instances, view the properties of started business process instances, deploy new business process definitions. Administrators can: create /remove actors and groups, include /exclude actors to/from groups, grant permissions on system objects to actors and groups, forcibly stop business process instances, add/change actors substitutions rules.
Tutorial: https://runawfe.org/doc/Tutorial
InstallationGuide: https://runawfe.org/doc/InstallationGuide
Documentation: https://runawfe.org/doc/Documentation