
JSON Formatter & Validator
DevTools Advanced
JSONFormatter.org
FreeFormatter
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SmallDevTools
TheDevTools
FOSS tools for developers

AutoCalcs
calc4fem
CalcSteel
Calculon
ClearCalcs
Maker Calc
MechanixCalc
Amni-Calc — free WASM engineering modules for bolted joints, stress analysis, beams, and related mechanical checks. Theory + calculator on the same page; data never leaves the browser. Open modules at amni-scient.com/calc/ (e.g. bolts, stress, beam).

Which is more popular?
Website, pricing, platforms and company facts side by side.
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|---|---|---|
| Website | developertools.tech | amni-scient.com |
| Pricing | ||
| Platforms | — | |
| Company | — | Startup from the United States · 1 - 9 employees |
| Listed in |
In their own words, as submitted to SaaSHub.


No description of DeveloperTools.Tech yet.
37 engineering calculators in one browser tab: beams, bolts, springs, seals, fatigue, fluids, heat exchangers, pressure vessels, HVAC, electrical, machining, hydraulics, rigging, CAD Studio, and more. Each module carries the theory, a worked example, and a cited standard. The math runs as...
What each product offers, as listed by its team.


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


Overall verdict
Why this product is good
Recommended for
No analysis of Amni-Calc yet.
How often each product is chosen within a category, 0–100% relative to the other.


As answered by people managing DeveloperTools.Tech and Amni-Calc.
Amni-Calc's answer:
Amni-Calc's answer:
Everyday engineering calcs were either toy web calculators or install-bound software. I built WASM kernels with cited standards, worked examples, Plotly and 3D, and put them in the browser with no account.
Amni-Calc's answer:
Rust compiled to WebAssembly, HTML and JavaScript, Plotly, and Three.js. Hosted on amni-scient.com.
Amni-Calc's answer:
It's 37 engineering calculators in one browser tab: beams, FEA, bolts, springs, seals, fatigue, fluids, heat exchangers, pressure vessels, HVAC, electrical, machining, hydraulics, rigging, CAD Studio. Each module has theory, a worked example, and a cited standard. The kernels run as WebAssembly in the page, so you don't install anything, I don't collect telemetry, and I don't make you create an account.
Amni-Calc's answer:
You get 37 modules in one tab, each with theory, a worked example, and a cited standard. It runs locally in the browser, free, with no account and no telemetry. Closest peer on my listing is MechanixCalc.
Amni-Calc's answer:
Mechanical and design engineers, students, and anyone who sizes beams, bolts, springs, seals, fluids, heat exchangers, vessels, HVAC, or electrical work in a browser.
Share your experience with using DeveloperTools.Tech and Amni-Calc. For example, how are they different and which one is better?
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