Alien Forma.
Ideas in 3D.

Sketch, build and refine editable parts. Work with native CAD tools, or let a compatible AI assistant help through MCP.

Explore Alien Forma ↓Release downloads ↗

Free for personal, non-commercial use. Commercial use follows the terms.

Yellow ONDA SW-3 robotic arm pointing left, with its model inscription visible, rendered in Alien Forma — Real model. Actual application render.

SKETCH. MODEL. MAKE.

What is Alien Forma?

Alien Forma is a parametric CAD application by CongestedAI. Create editable 3D models with sketches, extrusions, cuts and assemblies; prepare technical drawings, paint surfaces and export 3MF. Projects stay local. The optional MCP bridge lets compatible AI assistants use the native tools alongside you.

Get the Windows portable app or Microsoft Store edition. On macOS and Linux, use the command-line package with a supported browser. See the installation requirements.

Experimental animation. For now, the most practical way to set up motion is with an AI agent connected through MCP. We are improving manual setup in the interface to make it simpler and more intuitive.

Alien Forma's Animation workspace in Orbital Light, showing the robotic arm pointing left — Workspace · Orbital Light theme

Robotic arm following a square near the floor and a raised circle, with trajectory presentation annotations — Square + raised circle · kinematic demonstration

Joint-driven poses, keyframes and playback. The motion demo is kinematic; its trajectory overlay is a presentation annotation.

From model to technical drawing.

Open PDF ↗

Robotic arm general arrangement: aligned front, top and right orthographic views, a left-facing isometric view, overall dimensions and title block — Native drawing export · millimetres · aligned orthographic views and a separate isometric view

Design-reference sheet. Verify dimensions and fits before fabrication.

YOUR LOCAL CAD WORKSPACE

From first sketch
to presentation.

MCP documentation ↗

Editable modelling

Build parts with sketches, pads, pockets, sweeps and native modelling operations.

Assemblies & joints

Organise multiple bodies and define their relationships in one local project.

Painting & textures

Explore surface colours, image-based artwork and materials alongside your geometry.

Technical drawings & export

Create technical views and export your work, including 3MF for compatible workflows.

AI tools through MCP

Let compatible assistants discover native CAD tools, inspect the model and work with you.

Experimental animation

Explore joint-driven poses and keyframes. MCP is currently the most practical setup workflow; manual setup is being improved.

Explore the 0.7 update: Assemblies in motion ↗

Get Alien Forma.

GitHub ReleasesLatest published builds & release notes Microsoft StoreInstall & update on Windows

Check each channel's available version. Microsoft Store updates follow a separate review.

Preview results do not certify physical strength or a collision-free path. Structural analysis is experimental and requires supported solver components.

Alien Forma.Ideas in 3D.