For statechart diagrams see: https://xstate.js.org/viz/ https://xstate.js.org/viz/ Note that in addition to being editable, they are executable and can be used

For statechart diagrams see: https://xstate.js.org/viz/ https://xstate.js.org/viz/ Note that in addition to being editable, they are executable and can be used to implement state transition logic in node/browser JS code. The visualizer is used throughout XState's docs.