jDraft is a simple 2D drawing program for creating engineering drawings. On a superficial level it resembles simple drawing programs, such as old MacDraw or later day OpenOffice-Draw. But there is a difference. Anyone who tries to draw accurate drawings (that would conform to good engineering draftmanship guidelines) with these programs will soon find out that it simply is not possible.
The main design goal of jDraft was to make it possible to draw geometrically accurate/correct drawings in a simple and natural way, not unlike the time honored way of using a compass/divider and a straight edge. jDraft is by no means the only show in town, plenty of 2D CAD software around. Without badmouthing any particular software, I think it is fair to say that while those programs allow the creation of accurate drawings, many of them are not that easy to use. s jDraft attempts to be an animal of a different color, combining the ease of use of simple drawing programs with the accuracy of full blown CAD applications.