
CalcSteel
ClearCalcs
SkyCiv Structural 3D
calc4fem
Space Gass
Calculon
CloudCalc
Model, analyse, and design structures with powerful 3D FEA and integrated steel design tools, all from your browser.

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Website, pricing, platforms and company facts side by side.
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| Website | autocalcs.com | opalstack.com |
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| Company | Startup from Australia · 1 - 9 employees · 2025 | — |
| Listed in |
In their own words, as submitted to SaaSHub.


AutoCalcs is a browser-based 3D structural analysis and steel design platform built for engineers who want a faster, more accessible alternative to traditional desktop FEA software. Create and edit beams, frames, trusses, and plate models directly in your browser, apply loads and combinations,...
No description of Opalstack yet.
What each product offers, as listed by its team.


Possible disadvantages
An editorial look at what each product does well and who it suits.


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Walkthroughs and reviews on video.
How to run a Free Simple Beam Analysis in Minutes | AutoCalcs Tutorial
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As answered by people managing AutoCalcs and Opalstack.
AutoCalcs's answer
AutoCalcs combines interactive 3D structural FEA with integrated steel design tools in a modern browser-based workspace, with no installation required.
AutoCalcs's answer
It offers a faster, more accessible way to model, analyse, and review structures without the cost, setup, and complexity of traditional desktop engineering software.
AutoCalcs's answer
AutoCalcs is primarily built for structural engineers, small engineering consultancies, students, and educators who need practical analysis and steel design tools.
AutoCalcs's answer
AutoCalcs was created to make structural engineering software more accessible, visual, and straightforward, bringing capable analysis tools to the web instead of locking them behind expensive desktop installations.
AutoCalcs's answer
AutoCalcs is a browser-based application built with React, Next.js, and TypeScript, supported by a Python analysis service based on a customised fork of the open-source Pynite finite element library.
AutoCalcs's answer
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When comparing AutoCalcs and Opalstack, you can also consider the following products.

Model, detail and generate drawings for steel structures directly in your browser. 3D editor, automatic sheets, PDF export.
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Online structural design software. Calculation tools for shear force, bending moment, cantilever deflection, steel beam calculations, wood, concrete and more.
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SkyCiv Structural 3D is a powerful structural analysis and design software on the cloud.
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Spreadsheet Template for Structural Engineering (FEA Analysis for beams, trusses, 2D-frames).
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🧮 A basic, open-source, cross-platform, and note-style calculator. - sj14/calculon
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