This one needs a desktop

Structures are drawn by dragging on a canvas, and the results sit beside the drawing rather than under it. Neither works on a screen this narrow, so rather than give you a cramped version of both, it asks for a wider window.

Open it on a laptop or desktop, at 1024 pixels wide or more.

Structural analysis of beams, trusses and portal frames in the browser

Draw the structure, press Calculate, and read the answers. There is no beam mode or truss mode to choose between — a member hinged at both ends is a truss member, and whatever you draw is what gets solved. File › Report gathers the drawing and every input and result onto one sheet for Word or PDF. It is in development: a beta, free to use while the testing lasts, for anyone signed in.

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