There are several well-known commercial flowchart and diagram software available, e.g., Visio on Windows, OmniGraffle on MacOS X. Then what about Linux? In fact, there are a couple of reasonably good Linux alternatives to Visio or OmniGraffle, for example, yEd, Dia, LibreOffice Draw, Pencil Project, etc.
In this tutorial, I will describe how to create flowchart or diagram with yEd graph editor on Linux.
Full article here:
How to draw flowchart or diagram on Linux (Xmodulo)