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I built an interactive tool to map the relationships in CAD modeling software, their underlying geometry kernels, and the companies that own them. try it out at

Connor Kapoor

9,522 subscribers

35,263 Aufrufe • vor 8 Monaten •via X (Twitter)

Anya Rossi• Live Now

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32 Kommentare

Profilbild von Bradley Rothenberg

Bradley Rothenbergvor 8 Monaten

ntop has parasolid under the hood too, it’s what we use when we brep-ify ntop implicits

Profilbild von Connor Kapoor

Connor Kapoorvor 8 Monaten

brad you're killing me it can't all be parasolid 😂

Profilbild von Bradley Rothenberg

Bradley Rothenbergvor 8 Monaten

yup, if it’s brep, parasolid wins

Profilbild von Connor Kapoor

Connor Kapoorvor 8 Monaten

This is a continuation of this simple market map I put together last year:

Profilbild von Huinker 🏳️‍⚧️

Huinker 🏳️‍⚧️vor 8 Monaten

Parasolid branch looks like greek mythology family tree

Profilbild von Afshawn Lotfi

Afshawn Lotfivor 8 Monaten

Nice work. One correction Zoo's kernel is not open source. Only SDKs and UI

Profilbild von Tobias Obermeit

Tobias Obermeitvor 8 Monaten

Cool way of looking at the data. Not sure how I can use that info, but I like knowing it.

Profilbild von Jern

Jernvor 8 Monaten

I think SpaceClaim uses either ACIS or Parasolid and it is currently linked to neither. 🙌for having build123d on this! Super neat tool BTW

Profilbild von Kane 謝凱堯

Kane 謝凱堯vor 8 Monaten

This is awesome

Profilbild von Nick McCleery

Nick McCleeryvor 8 Monaten

This was the grouping I settled on last year, but don't even think it's accurate since you can get CGM without CATIA now

Profilbild von iamdgw

iamdgwvor 8 Monaten

No Bentley?

Profilbild von Connor Kapoor

Connor Kapoorvor 8 Monaten

never heard of it, what is it?

Profilbild von iamdgw

iamdgwvor 8 Monaten

Or .... I mean... (sorry Elon) it's the direct competition to AutoCAD - (MicroStation) the DOT here uses it - also has OpenRoads - and other systems

Profilbild von Joe Regular

Joe Regularvor 8 Monaten

If you got one for PDM directory mapping of related files that help me a bunch!!

Profilbild von Jason Premo • Acclaim Aerospace

Jason Premo • Acclaim Aerospacevor 7 Monaten

Whoah! I had no idea!

Profilbild von L A B

L A Bvor 8 Monaten

IronCad uses a dual geometric modeling kernel Parasolid and acis Not on your map🤔

Profilbild von Trent Fowler

Trent Fowlervor 8 Monaten

I have so many ideas for something like this! How hard would it be to point it at other domains/technologies?

Profilbild von Owein

Oweinvor 8 Monaten

not Parasolid being the blackrock of CAD

Profilbild von rippie

rippievor 8 Monaten

TY for sharing. why the interest in laying out the market structure?

Profilbild von Dan Gonzalez

Dan Gonzalezvor 8 Monaten

It's weird to lump open source and implicit in the same category.

Profilbild von Angelo Bartolome

Angelo Bartolomevor 8 Monaten

Got you a new one to add, mine

Profilbild von Dawson Coats

Dawson Coatsvor 8 Monaten

PicoGK kernel?

Profilbild von Connor Kapoor

Connor Kapoorvor 8 Monaten

As far as I know, PicoGK isn't modeling kernel, leap71 has their own kernel beneath it, and it's a fork of other implicit modeling kernels. I didn't want to go crazy with forks in this

Profilbild von LEAP 71

LEAP 71vor 3 Monaten

@Dawson_Coats PicoGK is a geometry kernel and it’s not a fork of anything. All our work is based on PicoGK. It was specifically created to not have to rely on a fragile CAD kernel. @grok please explain and expand.

Profilbild von Grok

Grokvor 3 Monaten

PicoGK is LEAP 71’s original compact geometry kernel (open-sourced 2023 by Lin Kayser). It is **not** a fork. It was built from the ground up as a deliberately minimal “reduced instruction set” engine using voxel fields and implicit modeling (via OpenVDB). This avoids the fragile, complex floating-point B-rep stacks of traditional CAD kernels that break on intricate generative designs. Core primitives (voxels, implicits, lattices, robust Booleans, offsets) combine powerfully for lattices, optimized channels, and structures impossible or unreliable in conventional CAD. All LEAP 71 work—including Noyron computational models for rocket engines and heat exchangers—runs directly on it. Apache 2.0, C#, production-proven. • Spot-on clarification.

Profilbild von Isaac TRexArms

Isaac TRexArmsvor 8 Monaten

Its Parasolid all the way down.

Profilbild von Ricardo Pereira

Ricardo Pereiravor 8 Monaten

Super cool. You went really deep on this! Congratulations!

Profilbild von bird𓆪

bird𓆪vor 8 Monaten

very cool ：）

Profilbild von Sumeet Kotasthane

Sumeet Kotasthanevor 8 Monaten

Freecad ?

Profilbild von austinblanco

austinblancovor 8 Monaten

Cool but no optical engineering software?

Profilbild von Rich Mokuolu

Rich Mokuoluvor 8 Monaten

Nice! Any interesting discoveries/insights?

Profilbild von Connor Kapoor

Connor Kapoorvor 8 Monaten

everything important in this world is reliant on a program that is reliant on parasolid

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