The online tool also supports importing Visio files (alongside the likes of Gliffy and Omnigraffe), ensuring that if you favour two different platforms, you still have cross compatibility. Lucidchart packs a really powerful feature set, being enough to meet needs of both amateurs and professionals alike. Lucidchart is one of the most favoured choices not just for Mac systems, but pretty much any platform, since this capable diagramming tool is web-based and can be used wherever you are.