SculptForge 0.9.3: Free Clay, Big Ambitions

For those who don’t know the tool: SculptForge is a free, GPL-3.0 digital sculpting application from independent developer Tony, also known as islandmed. It runs on Windows, macOS and Linux, borrows familiar ZBrush-style brushes and navigation, and offers sculpting, painting, retopology and pipeline exchange without an account or subscription. The goal is rather ambitious for something with a price tag of precisely zero.

Every so often, a developer sends over a project that sounds as though the feature list was accidentally copied from a five-year roadmap. SculptForge, now at version 0.9.3, is one of those. It is a young, free sculpting application with open-source code and a surprising amount already on the menu. We have not tested it, so consider this an invitation to investigate, not a verdict carved into digital marble.

The timing is interesting, too. With Autodesk winding down Mudbox sales, a new sculpting tool has a pretty good excuse to introduce itself. We also recently looked at ByHand, another free sculpting newcomer. SculptForge is going after a broader pipeline, particularly for artists who already have ZBrush habits and would rather not re-train hands before every stroke.

Clay first. Bureaucracy later.

SculptForge offers Standard, Clay, Move, Crease, Smooth, Flatten and other sculpting brushes, with symmetry, brush alphas, masking, polygroups and separate SubTools. Subdivision levels and sculpt layers give artists room to work on broad forms and detail without treating each change as a permanent life decision. Its ZBrush-style modifiers, keyboard shortcuts and navigation deliberately feel familiar; there is even GoZ interchange for the adventurous.

The geometry tools include Sculptris Pro-style dynamic topology, voxel remeshing, quad retopology with guides and detail projection back from a dense source. Those are useful ingredients in a sculpt-to-asset workflow, rather than a promise that every automatically generated edge loop will immediately win the approval of the rigging department. Polypaint supports layers and blend modes, and the tool lists normal, displacement and ambient-occlusion map baking.

A sculpt that knows the way home

The pipeline work may be the most intriguing part. A two-way bridge for Blender 4.2 and newer sends selected meshes to SculptForge and updates them back in place, with transforms, UVs, colours, masks and face sets carried across according to the developer. Unreal Engine users get a direct Send to Unreal route for updating assets, while FBX, glTF/GLB, OpenUSD and STL offer more conventional exits. There are also command-line and Python automation options, plus Linux builds targeting the VFX Reference Platform CY2026 and CY2027. That is an unusually production-minded to-do list for a new application.

For artists who just want to sculpt, the details are still welcome. For a pipeline TD, a native Linux build, scriptable operations and file interchange may be more exciting than another brush that makes clay look slightly more scrunchy-like. Everyone is entitled to their own idea of fun.

Scan it, sculpt it, put it on the desk

Then there is the delightfully odd bonus. SculptForge can capture an object with a phone through a QR-code workflow and use Gaussian splats as a reference. The developer describes a conversion path from scan data to a watertight, quad-remeshed and coloured sculptable mesh; the resulting geometry can be refined rather than left as a capture you can only admire from the correct angle. The phone-capture workflow is described as training on the computer’s GPU, so the machine doing the work matters.

For character work, the developer also lists 52 ARKit-compatible facial blend shapes, a live face feed and exported animation takes. And if the model needs a change of scenery, there is an augmented-reality preview to put the sculpt on your actual desk. Finally, an excuse to tell colleagues you are taking a dragon to lunch.

Worth a spin? You tell us.

SculptForge builds and source are available free for Windows, macOS and Linux under GPL-3.0. The official website has the feature overview and demonstrations. There is no subscription or login requirement, and the developer supplies platform packages and an installation guide. The downloadable builds are not yet code-signed, so users may encounter operating-system security prompts.

One practical caveat before rearranging a studio around it: this is an early project, and the developer explicitly says that the live GoZ bridge has not yet been tested against a running ZBrush installation. Nor have we run our own brush-response, dense-scene, export or pipeline tests. But it looks sufficiently interesting to deserve a proper outing. If you give SculptForge a workout, tell us what holds up, what needs another pass and whether it deserves a permanent place beside your other tools. We would genuinely like to know.