So I like this MacOS feature where your cursor displays in large. I was hoping if anyone knew of such software that replicates this functionality for Linux. Considering MacOS and Linux are both Unix, and libraries are different, could X or Wayland help replicate this?
KDE Plasma has a desktop effect called "Track Mouse" after you activate it you can use it by pressing Ctrl+Meta. It doesn't look like the MacOS variant, but it does the job.
Thanks for pointing that out, I found the setting on my laptop and tried it out. I do like the jiggle approach better, though, simply because that is something many people (myself included) instinctively do when losing track of the mouse cursor.
Apple software team is on another level. You don’t even have to try to find the feature. We all instinctively shake the mouse to locate the cursor, so it just happens.
It depends on your desktop environment. For GNOME, you can try jiggle. For me, Jiggle is listed as incompatible, unfortunately.
The built-in accessibility setting for finding your mouse is the Windows-style "press left ctrl to highlight the mouse". KDE has the same feature, though they're working on including a macOS-like jiggle feature in the upcoming Plasma 6 release.
On my Mac running yabai it sometimes gets into this weird state where the mouse does this as it toggles rapidly back and forth between some windows. No idea what causes it...
On Linux I run i3 which kinda negates the need for the mouse finder since it will move the cursor to the active window.
I guess I didn't remotely answer you question though!
Back to the to the topic, yes, Linux is not technically Unix by pedigree. In practice, it doesn't matter that it isn't and it wouldn't matter if it were, both for this issue in particular and for most others you are likely to encounter.
The actually relevant technology here is the graphics subsystem, and MacOS's Cocoa has always been radically different from anything else in the Unix/Linux space. There is no relation whatsoever to either X11 or Wayland. The only thing worth "porting" here is the basic idea. Which is pretty neat, though. Let's hope Apple hasn't patented it.
Quartz is the old macOS graphics framework, but the mouse shaking is probably just a cool show off feature of Core Animation. There’s uncontested Windows ports on GitHub, so I doubt Apple will throw any fits for Linux.