Pascal Editor Launches: A Free, Open-Source 3D Building Editor with WebGPU and AI Support

The release of Pascal Editor has arrived on GitHub. It is a free, open-source, browser-based 3D editor designed for architectural planning, floor plans, and interior design. The tool requires no installation and runs directly in your web browser.

Design and Visualization Features

Pascal Editor provides a comprehensive suite of tools for creating multi-story structures:

• Construction: Create walls, floors, and roofs, and place windows, doors, and furniture elements.
• Display Modes: Quickly toggle between 2D blueprints and 3D models.
• Navigation and Inspection: Features include floor-by-floor building breakdown and a first-person walkthrough mode.
• Export: Finished projects can be exported for further work in other 3D editing software.

Tech Stack and AI Integration

The editor’s high performance and smooth operation are powered by a combination of React Three Fiber and the WebGPU graphics API.

A standout feature of Pascal Editor is its support for AI agents. Users can connect tools like Codex or Claude Code to the editor, allowing them to hand over layout tasks to artificial intelligence—for example, to automatically reposition windows or arrange objects using text-based commands.

How to Get Started

The project is distributed for free under an open-source license. You can view the documentation and launch the editor via the official repository on GitHub.

🚨Architects are going to hate this.

Someone just open-sourced a full 3D building editor that runs entirely in your browser.

No AutoCAD. No Revit. No $5,000/year licenses.

It's called Pascal Editor.

Built with React Three Fiber and WebGPU — meaning it renders directly on… pic.twitter.com/hGB6MQhkmC

— Nagma parween (@TechByNagma) July 26, 2026