Sweet Home 3D
Open-source interior design tool for building 2D floor plans and rendering photorealistic 3D room visualizations.
Sweet Home 3D — Key Facts
- Latest Version
- Latest
- License
- Open Source
- Category
- Graphic Design
- Price
- Free to download
- Official Site
- www.sweethome3d.com
- User Rating
- ★ 4.2 / 5 (712 ratings)
- Tags
- open-source, 3d, vector, free, illustration
About Sweet Home 3D
Sweet Home 3D download gives architects, interior designers, and ambitious home renovators a free, open-source floor-plan editor that operates simultaneously in a 2D top-down view and a live 3D perspective window. Walls are drawn by dragging paths directly on the artboard, with per-segment control over thickness, angle, and curve. Doors and windows drop from a built-in catalog into wall segments, and the engine auto-calculates the structural openings — no manual node editing required. graphic design hosts several comparable tools, but few automate wall-breach geometry at this level for zero cost.
The workflow centers on two parallel viewports. The 2D plan acts as the primary layout layer — you set dimensions, align walls along a grid, and fill the space with furniture drawn from a catalog of roughly 100 objects. The 3D viewport updates in real time as you drag items. Export paths are wide: finished projects render out as raster images (PNG, JPG), vector SVG files, OBJ or DAE 3D models, and MP4 video walkthroughs. SVG output preserves stroke and fill geometry cleanly for further editing. linux and macos are the native desktop targets, though a Java-dependent browser version also exists.
Performance on complex scenes with dozens of imported OBJ models can slow viewport refresh on machines under 8 GB RAM. The free tier carries around 100 furniture models; a paid catalog tier expands that library substantially — making this effectively open source at the core with a freemium object store layered on top. Compared to SketchUp Free, Sweet Home 3D offers more direct export control (video, SVG, 3D formats simultaneously) but lacks SketchUp's parametric component system and advanced bezier curve surface modeling.
For home planners who need a capable, no-cost floor-plan tool with real rendering output, Sweet Home 3D hits a practical sweet spot. The open source codebase means no watermark on exports and no subscription gate on core features. Power users can import custom 3D models in OBJ or DAE format to bypass the catalog limit entirely. 3d rendering quality scales with scene complexity, and the video walkthrough export makes client presentations straightforward without additional screen-recorder software.
Sweet Home 3D is a open source graphic design available for Windows, macOS, Linux. Browse more open source software or 3d programs.