yED is a free graphic and diagraming software tool. In my low-tech opinion it's simple to use and covers applications from very basic diagrams to complex flowcharts. I can only attest to its simpler applications as that is the extent of my expertise. The program has to be downloaded to your device which means we won't be able to download it to our work computers.....SAD. I find it easier to use than Mindmap. I think it works well when doing genealogy charts and diagrams for presentations and in research.
FS