Floor Planner
A JavaScript floor planner allows users to create, edit, and visualize 2D or 3D layouts of rooms, buildings, or office spaces directly in the browser. It typically includes features like drag-and-drop furniture, grid snapping, wall drawing, dimension scaling, and possibly 3D viewing.
Popular Libraries & Tools
Fabric.js
Great for building a 2D floor planner. Lets you draw walls, add furniture, scale dimensions, etc.
Floorplanner SDK
A professional tool with a JavaScript SDK, but mostly for integration—not open-source.
Sweet Home 3D (with JS port)
Open-source and supports both 2D and 3D. Can be embedded with JavaScript using WebGL.
Planner 5D
A visual platform with an API for embedding, though commercial usage may require a license.
Three.js
A powerful 3D rendering library. If you want a custom 3D floor planner, you can build one from scratch using Three.js.