AXONOMETRA
An open-source floor planner for the browser.
A 2D floor planner built for the browser - walls, doors, windows, fixtures, furniture, multiple floors, accurate-to-scale measurement. A 3D walk-through viewer is on the roadmap.
Built for healthcare facility layouts, small-building design (sheds, bunkers, ADUs), and any place a fast, embeddable plan editor is wanted.