ShapeCraft

ShapeCraft is for making real things: a part for your 3D printer, a box for your electronics, the bracket you've been meaning to design for months. You don't need to be an engineer, and you don't need to sign up for anything.

The whole trick is three moves: sketch on any face, pull the sketch into a solid (up adds, down cuts), and drag an edge to round it. Every step stays in History, so you can change a number later and the model rebuilds.

It opens what you already have (.shapr, STEP, Parasolid, IGES, STL, OBJ, 3MF, and DXF or SVG as sketches), works with a mouse, a trackpad, a pen or touch, and lets you pick the navigation your hands already know from other CAD and 3D apps.

No account, no cloud, no subscription, no telemetry. Projects are plain folders on your disk, it works offline, autosaves, and updates itself in the background. Three built-in tutorials get you going in about seven minutes each.