There are 5 repositories under workflow-designer topic.
Customizable no-code component for building flow-based programming applications. 0 external dependencies.
.NET Workflow Designer Rehosting & Custom Activity Library Example
Standalone Moqui workflow builder application based on Vue.js
Workflow designer written in TypeScript with no dependencies.
TheFlow Console UI Based on Vue and Vuetify, integrated flowable-modeler
VL Nodes and Designer for Windows Workflow Foundation (WF45)
user interface for workflow designer