The Zim wiki software has a plugin for graphviz (https://www.zim-wiki.org/manual/Plugins/Diagram_Editor.html https://www.zim-wiki.org/manual/Plugins/Diagram_Edi

The Zim wiki software has a plugin for graphviz (https://www.zim-wiki.org/manual/Plugins/Diagram_Editor.html https://www.zim-wiki.org/manual/Plugins/Diagram_Editor.html), where you can edit your graph and see the results in real time. Very helpful if only for this feature