JustCAD is described as 'JustCad is designed, to make cad drawing as simple as possible'. There are more than 10 alternatives to JustCAD for a variety of platforms, including Windows, Mac, Linux, Online / Web-based and BSD. The best alternative is LibreCAD, which is both free and Open Source. Other great apps like JustCAD are DraftSight (Paid), QCAD (Free Personal), progeCAD Smart (Free Personal) and Draft it (Freemium).
Customized to the specific building rules of dock building companies, Dock Designer enables visual design in 2D where you can see your dock design in 3D and have instant access to accurate estimates, parts lists, blueprints, and much more.
progeCAD Professional is the most reliable Autodesk AutoCAD alternative, the low-cost 2D/3D DWG-native CAD, offering the AutoCAD look-and-feel, DWG 2014 and Windows 8 compatibility. It is a fully-functional, easy-to-use and low-cost CAD solution.