Floorplan
A clickable diagram of your codebase for people who did not write it
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SpacePlanner
Draw floor plans, gardens and wiring in the browser, then walk through in 3D
Homeowners can sketch a renovation, including an electrical plan with a printed legend, without paying for or installing CAD software.
SpacePlanner is a free browser editor for rooms, whole homes, gardens, pools and offices. Walls, doors and windows drawn in 2D become a 3D model you can walk through. It also handles electrical plans with switches, outlets and home-run wiring, and can turn a photo of an existing floor plan into an editable one. No account is needed to start. The maker's Reddit post is about traffic that grew to 15,000 users a day.
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