Grafed was an application I wrote for use at school, VTI Kortrijk. We had to draw grafcet schemes but had to use Paint or the graphical features of Microsoft Word, as there were no free Grafcet editors at the time. Grafed was a simple grid-based editor and allowed you to export your grafcet as an image. It also supported saving grafcets to be edited later.
Unfortunately I have lost both the source and the binaries for this project.