I've never heard of this or if I have, I don't remember it.

It's an open source IDE that's Delphi compatible. The author of the article is trying to make a Mac app.

* Downloads are from an ad-ridden SourceForge page.

* I download Lazarus I don't get a nice little Mac app... I get a folder full of stuff

* Starting the app, macOS tells me “lazarus” is damaged and can’t be opened. You should move it to the Trash.

* On the project screenshots page, ReactOS is shown before macOS and macOS screenshots are from a while ago.

Contrast that experience with... VSCodium, the open source community version of VSCode.

* Download is from GitHub, no ads.

* Downloads a disk image with a familiar pattern

* Drag the VSCodium app bundle to my Applications folder

* I get prompted if I want to open it as it's something downloaded... and VSCodium opens (slowly at first) -- up pops a message saying I've downloaded the x86 version by mistake and I should download the ARM64 version and there's a link to do it... downloading the correct version and it opens instantly.

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All of this to say... with any project, open source or proprietary there is a sense of native/correctly packaged for your OS that's obvious, and if a project doesn't do that I wonder if anyone is using it for that OS.