Engineering on Web
Free CAD, FEA and SPC tools that run in your browser
Developer Tools·AI & Machine Learning·Education
What is Engineering on Web?
Engineering on Web is a free suite of three engineering tools that run in the browser, with nothing to install and no account required.
CAD: parametric 3D modeling with constrained 2D sketches, parts, assemblies and technical drawings. An AI assistant can build CAD features from a text or voice prompt, and models export to STL, STEP, IGES and DXF.
FEA: a finite element simulator for structural, thermal, fluid and electromagnetic problems, including coupled physics in 2D and 3D. Solvers run on WebAssembly with WebGPU acceleration and a CPU fallback.
Analysis: industrial statistics for quality engineers (control charts, process capability, design of experiments), publication-quality graphs, and a SCADA generator that exports apps for Windows, macOS and Linux.
The tools work together: design a part in CAD, export it as STL or STEP, simulate it in FEA, then monitor production quality in Analysis. It is built for mechanical engineers, engineering students, makers and educators, and the interface is available in 10 languages.
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FounderPlaybooks.
What other founders did to grow.
2722 dispatches from hundreds of founders, pulled from the week's best podcasts.
I decided to go with a one-time payment because you know as you said that it's much easier to sell um a onetime fee for something uh than it is to sell a subscription if if your product doesn't have a really good recurring value um there is no point of charging your recurring Revenue
Charge one-time when there's no genuine recurring value
Subscriptions only make sense when the product produces ongoing value for the customer. For a finished-asset product like a boilerplate, a one-time fee converts dramatically better — there's nothing to justify a monthly bill. Honest test: would the customer feel ripped off paying again next month? If yes, ship one-time.
Our business is driven by ugc right we have this classic ugc flywheel and so obviously we know our pro users are more engaged but a ton of engagement comes from our free users as well and so you can't kind of turn the screws on them too hard without like really fundamentally damaging the business.
UGC Flywheel Means You Cannot Over-Monetize Free Users — They Power The Core Product
AllTrails' trail data — ratings, photos, condition reports, closures — is entirely user-generated. Free users produce the content that makes the product valuable to paying subscribers. This creates a constraint on aggressive monetization: squeeze free users too hard and you destroy the input supply for the whole flywheel. Any app where free users generate value for paid users must treat free-user experience as a product asset.
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