
2D Frame Analysis by ENGISSOL
SkyCiv Structural 3D
Robot Structural Analysis Professional
STAAD.Pro
CalcSteel
AutoCalcs
PROKON Structural Analysis and Design
Free online 2D FEA calculator. Analyze beams, frames, and trusses. Get instant shear, moment, and deflection diagrams. No install required.

SkyCiv Structural 3D
Robot Structural Analysis Professional
midas Gen
AutoCalcs
CalcSteel
Abaqus Unified FEA
Space Gass
CloudCalc provides free cloud based structural analysis software.

Which is more popular?
Website, pricing, platforms and company facts side by side.
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| Website | rodxcalc.com | cloudcalc.com |
| Pricing | ||
| Platforms | — | |
| Company | 2025 | — |
| Listed in |
In their own words, as submitted to SaaSHub.


RodX is an online 2D structural analysis tool (FEA) for engineers who need fast answers at the conceptual design stage. Model frames, trusses, beams schemes directly in your browser, apply loads, and instantly see internal force diagrams, displacements and support reactions. Every analysis can be...
No description of CloudCalc yet.
What each product offers, as listed by its team.


Possible disadvantages
Walkthroughs and reviews on video.
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Overview of the CloudCalc Structural Analysis Product
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How often each product is chosen within a category, 0–100% relative to the other.


As answered by people managing RodX and CloudCalc.
RodX's answer
I’m a structural engineer with 15 years of design experience, and for a long time I wanted a simple but genuinely useful tool for quick conceptual sketches: something that would cut a rapid structural check down to a few minutes. The software I used every day was powerful, but far too heavy for testing an idea early in a project. So I started building RodX for myself, as the tool I always wished existed. Because I’ve been on the user’s side for years, I know exactly what engineers need from this kind of software and what just gets in the way. Today’s web technologies made it possible for one engineer to turn that idea into a working product.
RodX's answer
RodX is a browser-based 2D structural analysis tool built by a structural engineer with 15 years of hands-on experience in industry-standard heavy FEA software - the tool he always wished he had for quick checks. The interface was designed entirely from scratch, without off-the-shelf UI frameworks, around a single principle: remove every bit of friction between the engineer and the model. No installation, no lengthy setup, no manual to read first. You sketch a frame, truss or beam, apply loads, and get a ready-to-share PDF calculation report in minutes. RodX fills the gap between hand calculations and heavyweight desktop packages like SAP2000, ETABS or Midas Civil: fast enough for conceptual design and hypothesis checks, rigorous enough to trust the numbers.
RodX's answer
Easy to learn. A clean interface built specifically for structural engineers, so you can run your first analysis without training or tutorials. Fast to work with. From a blank canvas to a PDF report in a few minutes. Runs in the browser on any OS, with nothing to install. Verified results. The solver and post-processor is benchmarked against analytical solutions, so you can rely on the output. Free for academia. Students get free full access for 1 year, teachers for 2 years. There’s also a free plan for everyday quick checks.
RodX's answer
RodX is built for structural engineers at freelance practices and small design firms who need a fast way to check engineering ideas at the conceptual stage. It’s the step between an initial idea and heavyweight commercial software: quick enough to test a structural hypothesis in minutes, without the cost, setup time and learning curve of a full desktop package. A secondary audience is civil and structural engineering students and teachers, who use RodX to learn and teach structural behaviour through a simple, visual interface.
RodX's answer
RodX is built with Python and Flask on the backend, and vanilla JavaScript, HTML5 Canvas, HTML, and CSS on the frontend. Structural analysis is powered by PyNite.
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When comparing RodX and CloudCalc, you can also consider the following products.

Easy, efficient with great variety of capabilities, including linear and non linear analysis, automatically created analysis reports. Top software for structural analysis. It is considered top product for structural analysis of trusses and frames.
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SkyCiv Structural 3D is a powerful structural analysis and design software on the cloud.
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Structural Analysis and Design
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Model, analyse, and design structures with powerful 3D FEA and integrated steel design tools, all from your browser.
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