Cubber is a hard-surface shape generator for Blender, built to speed up prototyping and concept art work. You select a mesh — faces or a whole object — then click the "Cubber it" button to generate a complex shape. From there, every parameter is adjustable through sliders, so you can refine the generated result.
Beyond the core generator, Cubber ships with a preset library for faster starting points; version 1.0 includes seven presets, with the collection set to grow over time. It also bundles Shaper, a complete addon inside Cubber for producing hard-surface and complex shapes. Full parameter documentation is available on the developer's website.
Cubber supports Blender 3.0 through 3.6 and works with both Cycles and Eevee. It's distributed under the GPL license. With sales past forty on Superhive, it's a compact tool for generating detailed hard-surface geometry in a few clicks.