To beat the heat, you can use a few popular online tools for free and there are EdrawMax, ASCII Flow, Draw.io, etc.īut if you are still looking for a desktop application, then you can use these applications in offline mode. It's hard to believe, but really there is none of them. When it comes to macOS, there are no such options to use any diagramming tools for free. The Availability of Diagramming Tools of Mac Version
