A FreeCAD alternative that runs in your browser: free parametric CAD with editable history, fillets, STEP, and a gentler learning curve. Nothing to install.
Like FreeCAD, OwlCAD is free parametric CAD, but it runs in your browser with a gentler learning curve, cloud projects, and print-aware tools. (OwlCAD is a hosted web app, not open-source.)
Free to use · No install · Works on any OS
If you want open-source and offline, FreeCAD is the better fit. If you want zero-install, print-aware modeling with cloud sync, OwlCAD is built for that.
OwlCAD opens in any modern browser on any OS, with no download, no build and no setup. FreeCAD is a desktop application you install per platform.
Place a shape, drag a handle, type a dimension: modeling that’s approachable from the first click, without a workbench to learn first.
Re-open earlier steps and the model rebuilds; round or bevel single edges with fillets that hold their radius. Full undo / redo throughout.
Work autosaves locally and to the cloud with version history you can roll back, and you can publish a read-only share link, built in rather than bolted on.
Import and export solid STEP, plus STL, 3MF, OBJ, GLB, SVG and DXF, so you can bring FreeCAD exports in and keep building, units detected on import. OpenSCAD .scad and .csg open too, as an editable tree.
Describe a part and get an editable starting point, parametric or mesh. Included with OwlCAD Pro.
OwlCAD runs a hosted MCP server, so Claude Code, Claude Desktop or Cursor can build a part on your account — authoring a real parametric tree, running it through the CAD kernel, rendering it to check its own work, and handing back a print-ready file plus a project you can open and edit. Part of Pro, and it spends no AI credits.
No install, no setup. Start modeling in seconds and keep your work in the cloud.
Yes. Like FreeCAD, OwlCAD is free parametric CAD, but it runs entirely in your browser with nothing to install, a gentler learning curve, plus cloud projects and optional AI generation.
No. OwlCAD is a free hosted web app, not open-source software like FreeCAD. If a fully open-source, offline desktop tool is a hard requirement, FreeCAD is the better fit; if you want zero-install, print-aware modeling with cloud sync, OwlCAD is built for that.
No install. OwlCAD opens in any modern browser on any operating system, and your work autosaves locally and to the cloud, with no setup and no platform-specific build.
Export a STEP, STL, or OBJ from FreeCAD and import it into OwlCAD, with units detected on import, and STEP arrives as an editable solid.