Some JavaScript libraries about Flow Charts:
https://github.com/bcakmakoglu/vue-flow
https://jeffreyrn.github.io/vue-simple-flowchart/
https://reactflow.dev/docs/examples/interaction/drag-and-drop/
https://jerosoler.github.io/Drawflow/
https://gojs.net/latest/samples/blockEditor.html
https://github.com/alyssaxuu/flowy#example
https://www.jointjs.com/demos/flowchart
https://github.com/sdrdis/jquery.flowchart
Lists:
https://www.jqueryscript.net/blog/best-flowchart.html
https://www.reddit.com/r/webdev/comments/epw7wp/recommendations_for_a_drag_and_drop_flow_chart/
https://www.jqueryscript.net/blog/best-flowchart.html
https://modeling-languages.com/javascript-drawing-libraries-diagrams/
https://www.getapp.com/project-management-planning-software/flowchart/f/drag-drop-interface/