RapCAD is described as 'Rapid prototyping CAD IDE for RepRap and RepStrap 3D printing machines' and is a CAD software in the photos & graphics category. There are more than 10 alternatives to RapCAD for a variety of platforms, including Windows, Linux, Mac, Web-based and BSD apps. The best RapCAD alternative is FreeCAD, which is both free and Open Source. Other great apps like RapCAD are OpenSCAD, BRL-CAD, Antimony and PTC Creo.
A declarative parametric 3D modeling application built using Open Cascade (pythonocc) and enaml (python). It's similar to OpenSCAD in that everything is intended to be defined programatically.
A minimalist GUI for solid modeling with the libfive kernel. It is a design environment based on Guile Scheme, and should be familiar to OpenSCAD users.
