For a lot of people, SculptGL was the first time 3D sculpting happened in a browser tab instead of a $400 install. It still loads, it still works, and its development has officially stopped. Here's what it does, what it doesn't, how to get your files out, and what to move to — with facts checked against the source repository in August 2026. Disclosure up front: we build Re:Form, a browser sculpting tool that shows up later in this post, so weigh that section accordingly.
What is SculptGL?
SculptGL is a free, open-source 3D sculpting app that runs in a browser on WebGL, written by Stéphane Ginier and released under the MIT license. It ships thirteen sculpting tools, dynamic topology, masking, and vertex painting, and it imports and exports OBJ, PLY, and STL. There is nothing to install and no account to create.
It lives at stephaneginier.com/sculptgl, and the whole thing loads in a couple of seconds. That was remarkable when it appeared — this predates WebGPU by roughly a decade — and it's still the fastest path from "I wonder what sculpting feels like" to actually pushing a lump of digital clay around. No download, no sign-up, no license key. You open a page and there's a sphere waiting for you.
The source is public on GitHub under the MIT license with about 1,500 stars. That matters more than it sounds: MIT means anyone can legally fork, host, or build on the code, so SculptGL doesn't disappear if a domain lapses.
Is SculptGL still maintained?
No. Stéphane Ginier archived the SculptGL GitHub repository on January 17, 2026, and the repo banner now reads "DEVELOPMENT STOPPED I'm now working on Nomad Sculpt instead." As of August 2026 the app still loads and works normally, and the MIT-licensed source is still public, but no new features, fixes, or browser-compatibility updates are coming.
An archived GitHub repository is read-only: no commits, no merged pull requests, no issue triage. The code is preserved, not maintained. In practice that means SculptGL will keep working right up until some future browser change breaks something, and then it will stay broken unless someone forks it.
The developer's attention went somewhere reasonable. Ginier now builds Nomad Sculpt, a sculpting app that costs $19.99 as a one-time purchase on the App Store as of August 2026, with an Android version and a free desktop beta for Windows and macOS. If you're weighing that route, we went through the desktop situation in detail in our writeup on running Nomad Sculpt outside of a tablet.
The tools SculptGL actually ships
People assume a browser toy has three brushes and a reset button. SculptGL's tool list, read straight out of the source repository, is more serious than that:
| Tool | What it does |
|---|---|
| Brush | The general-purpose push/pull |
| Inflate | Adds volume along the surface normal |
| Crease | Cuts sharp valleys and ridges |
| Flatten | Averages a region toward a plane |
| Smooth | Relaxes noise and stroke edges |
| Pinch | Pulls surface toward the stroke center |
| Drag / Move | Grabs and displaces larger forms |
| Twist | Rotates geometry around the stroke axis |
| Local Scale | Grows or shrinks a region |
| Masking | Protects areas from further edits |
| Paint | Vertex color painting |
| Transform | Moves, rotates, and scales the object |
That's a real sculpting set. Draw, Crease, Flatten, Pinch, Smooth, and Move are the core six you'll find in every sculpting app ever made — the names shuffle between tools, but the jobs are identical. Anything you learn about form and silhouette in SculptGL transfers directly to Blender, ZBrush, or anything else.
Add dynamic topology — geometry that subdivides under the brush as you work, so you don't have to plan your resolution in advance — and SculptGL covers the fundamentals of the craft honestly.
Where SculptGL runs out of road
The limits are real, and they're the limits of a solo hobby project built on a graphics API from the early 2010s. That's a description, not a complaint.
- WebGL-era performance. SculptGL runs on WebGL, which was never designed for the kind of GPU compute that heavy sculpting wants. Dense meshes get sluggish, and the ceiling arrives well before "detailed character." If you want the technical version of why the newer API changes this, we wrote a plain-English explanation of WebGPU for artists.
- No sculpt layers. Every stroke is committed to the mesh. There's no non-destructive layer you can dial back or delete after the fact, which is the single feature that makes long sculpts survivable.
- Frozen against browser drift. Browsers change. An archived app can't respond. This is the risk that grows over time rather than shrinking.
- A minimal interface. The UI is a floating panel of sliders. It's efficient once you know it and offers essentially no guidance if you don't.
None of that makes SculptGL a bad recommendation for what it's good at, which is a zero-commitment first taste of sculpting on almost any machine.
Can you use SculptGL for 3D printing?
Yes. SculptGL exports STL and OBJ directly, and both formats drop straight into any slicer — Cura, PrusaSlicer, Bambu Studio, Chitubox. The catch is that SculptGL does no print-specific validation: no wall-thickness check, no manifold repair, no scale enforcement. Run the exported mesh through your slicer's repair pass before committing filament or resin to it.
The other practical issue is detail budget. Print-ready minis and busts want geometry density that SculptGL's WebGL engine struggles to hold comfortably. You can absolutely print something you sculpted in SculptGL — plenty of people have — but expect to fight the performance ceiling on anything with fine surface detail.
If you're unsure which extension to pick on the way out, STL is the safe default for printing and OBJ is the safe default for moving a model into other software. Our guide to the four formats you actually meet covers what each one silently drops.
Getting your work out of SculptGL
Do this before you get attached to anything, because the app is frozen and a browser tab is not a backup.
- Save the native file. SculptGL's own format is
.sgl, and it round-trips back into the app. Keep it if you plan to return to the sculpt. - Export a neutral mesh too. OBJ for general use, STL for printing, PLY if you want to preserve the vertex colors from the Paint tool. OBJ and STL both drop vertex color, so if you painted, PLY is the one that keeps it.
- Store both on disk, not in the browser. An archived app plus browser storage is two fragile things stacked on each other.
The source also includes upload paths to Sketchfab, Sculpteo, and Materialise. Those are third-party services that change on their own schedule, and a frozen client can't follow them — treat any of those buttons as a nice surprise if it works rather than part of your workflow.
What should you use instead of SculptGL?
For a free replacement that's actively developed, Blender 5.2 is the most complete option — free, open source, commercial use included. Re:Form keeps the zero-install browser workflow on WebGPU with the full toolset free, and is currently a v0.6.7 alpha built by us. Nomad Sculpt, from SculptGL's own author, is $19.99 one-time and the right answer on a tablet.
| Tool | Runs on | Price | Still developed | Best for |
|---|---|---|---|---|
| SculptGL | Any browser (WebGL) | Free | No — archived Jan 2026 | Instant, no-account first taste |
| Blender 5.2 | Windows / macOS / Linux | Free, open source | Yes | The whole pipeline, commercial use included |
| Re:Form | Desktop browser (WebGPU) | Free; Pro $9.99/mo | Yes — v0.6.7 alpha | Sculpting without installing anything |
| Nomad Sculpt | iOS / iPadOS / Android; desktop beta | $19.99 one-time (mobile) | Yes | Tablet sculpting with a pen |
Blender facts verified as of August 2026: version 5.2 shipped July 14, 2026, under the GPL, with commercial use permitted and no restrictions attached. It is a genuinely enormous piece of software and the download is a few hundred megabytes, which is exactly the friction SculptGL users were avoiding in the first place — but it is the most capable free sculpting environment that exists. For the wider field, our roundup of free ZBrush alternatives rates each one and says plainly which are dead.
How Re:Form compares to SculptGL
Same basic promise — open a tab, start sculpting, install nothing — built on a different generation of graphics API. Re:Form runs on WebGPU rather than WebGL, which is what allows the mesh to live on the GPU and lets the triangle budget go to roughly 12.5 million on the free plan. Disclosure again: Re:Form is our tool, and it is in alpha.
What the free plan includes: the entire toolset. Every brush, sculpt layers, masking, symmetry, one-click remeshing, and undo, with OBJ import and export, local .clay saves plus browser autosave, and no watermark. It requires a free sign-in and no card, and it's licensed for personal, non-commercial use. Pro is $9.99/month or $99/year and raises the budget to 50 million triangles, adds STL, GLB, and FBX import and export, and includes a commercial license so you can sell what you make. Full details are on the pricing page.
Where SculptGL still beats us, plainly:
- It runs on more machines. WebGL support is close to universal. Re:Form needs WebGPU — Chrome and Edge 113+, Firefox 141+ on Windows and 145+ on Apple Silicon Macs, and Safari 26 on macOS Tahoe, per the WebGPU implementation status as of August 2026 — plus a reasonably modern GPU. Older hardware that runs SculptGL fine may not run Re:Form at all.
- It needs no account. SculptGL asks nothing of you. Re:Form requires a free sign-in before you sculpt. That's a real difference in friction and we're not going to pretend otherwise.
- It's desktop-and-more. Re:Form is desktop-only, full stop. No phones, no tablets.
And where Re:Form goes further: sculpt layers, a much higher triangle ceiling, remeshing, autosave, and the fact that it's still being worked on. The mesh stays on your machine either way — Re:Form uploads nothing, and the engine's design goal is for stroke response to stay steady as the polygon count climbs.
If SculptGL got you interested and the performance ceiling is what stopped you, open Re:Form and try the same sculpt again. If it turns out you want the full pipeline instead, Blender is free and we'll happily point you there. More setup questions are answered in the FAQ.
FAQ
Is SculptGL free?
Yes. SculptGL is free with no account, no trial period, and no paid tier — it has never charged for anything. The source code is published on GitHub under the MIT license, which permits commercial use, modification, and redistribution. As of August 2026 the hosted app at stephaneginier.com still loads and runs at no cost, despite development having stopped.
Can SculptGL open Blender or ZBrush files?
Not natively. SculptGL imports OBJ, PLY, STL, and its own SGL format only — it cannot read .blend project files or ZBrush's ZTL and ZPR files. To move a model in from either program, export it as OBJ or STL first. Only the mesh transfers; layers, subtools, materials, and modifiers do not survive the trip.
What replaced SculptGL?
Nothing officially replaced it, but its author moved on to Nomad Sculpt, which costs $19.99 one-time on iOS and Android as of August 2026 and has a free desktop beta. For a free browser replacement, Re:Form (our tool, v0.6.7 alpha) covers the same no-install workflow on WebGPU. For a free desktop replacement, Blender 5.2 is the most complete option.