Linux

The CMD key. MacOS got it figured out with CMD separate from ctrl. Never have problems copying from a terminal because CMD+C is not ctrl+C

Seamless adaption to higher DPI when I work remotely on my work Windows machine. The RDP clients will just expand the desktop and everything is very small when I WFH. mstsc will change the size of everything but legacy apps according to the DPI of the display.

Fair number of FPS games refuses to work. Apex recently just did that. Other than that, none. Really happy my personal setup works so well.

Desktop shortcuts

Really good image noise reduction software.

That's pretty much the only thing I miss, and I don't miss it enough to suffer through Windows

Wallpaper Engine. Advantages Linux provides mostly are better than Windows, but man I miss clicking a few times and having an animated wallpaper working.

I'm about to switch from Windows back to Ubuntu, which I ran for a year or two but I missed Photoshop and Visual Studio. I've been using VSCode for dev work for a while and it's fine, and I can live with Gimp. I haven't used Office in years (Google docs & sheets are great). So I really don't expect to miss anything this time.

Good OS-native cloud syncing. The Windows Cloud Sync Engine is so useful and is now adopted by virtually every cloud storage provider, and crucially lets you keep your entire cloud drive visible as unsynced files and pulls them on-demand (ie. what Dropbox call Smart Sync).

Thanks to being freelance and working for different companies I have different files I work on in Dropbox and Onedrive as well as my personal stuff being stored on Proton and my Synology NAS through Drive, and none of these have linux integrations that even come close to their Windows or macOS equivalents. Things like Syncthing and rclone will do selective sync, so you aren't forced to sync your entire cloud drive on to your laptop's tiny SSD, but that still means half your files are missing and have to be accessed through janky browser interfaces 🤢

It's been so long since I used windows at home. I switched in 2009.

I use it at work, so I would say RDP is probably my favorite feature I would miss at home. But for the most part I use ssh anyways.

Uh, Shared GPU memory absolutely exists on Linux. Mind you this only exists (regardless of OS) when you have a shitty integrated GPU with no dedicated VRAM, but I am not sure why you think this only exists for Windows (or some other non-Linux OS, you did not specify).

Windows' lightweight photo editing thing. Great for highlighting screenshots.

All image editing software on linux (that I've tried) is 10x more clunky.

I miss not having to worry about whether any app or game would be easy to install and work flawlessly.

edit. also printing in general, situation is so dire that I just send whatever I want to print to my phone and print it from there these days.

to edit CONFIG.SYS and AUTOEXEC.BAT all night long

The carelessness. Mac OS is far from perfect, but it just happily chugs along. Linux often creates problems by just existing for too long. It's gotten much much better, but it's still not good.

installing programs. there's been random programs I've needed to download for school and I've sometimes spent hours running into random errors, having to find out what library or dependency I'm missing, etc. I miss being able to just click on an .exe and that's it.

I've been waiting for a post like this. Every single time I have tried Windows 11 I have fallen in love with the UI and UX. Sure, it can be buggy at times, but that's true with anything. It has always pained me a little bit every time I have to replace it with Linux. KDE Plasma 6 is the closest I've been able to find to Windows 11. Microsoft in my opinion did a really sleek and nice job making Windows 11 pretty, especially compared to Windows 10.

Being able to play League of Legends. We could until few months ago.

Shared memory is basically using your normal RAM as swapspace for your GPU.

I do like that splash screen on Windows before login, where it shows me a different beautiful landscape each day.

I'd say a Control Panel, I miss the plethora of authoritive knowledge and settings for every program, device, driver, network, user, and a dozen more things besides, all findable by browsing and not remembering dozens of commands. Of course I'd miss that either way, because Control Panel has been gutted every new version of windows since XP, but it was once nice.

The Start menu context menu, or SUPER+X, is still nice, although mostly for avoiding poor UI choices and slow menus. The fact that many useful options are guaranteed to be there on every windows machine is nice though.

And I would also say Event Viewer, despite how incredibly clunky it is to use. Having one place to check all system logs and track crashes of all kinds was quite useful.

Basically, windows at one point went out of it's way to centralize settings and info, and that's just not possible in Linux without a lot of setup.

Games :(

Some of my steam games dont run, and theres some files I cant run in Davinci Resolve. So probably just those

I don't miss anything really. All of my software already worked.

Coherent theming, although you've hardly had that since Windows 98.

I've applied themes to make Xaw, Qt, and GTK software more Motif-like, but the GTK ones seem spotty and the Qt theme doesn't work for Qt6, and fonts are inconsistent.

Support for auto cloud sync from vendors, or just auto cloud sync of setting between devices.

DE stability. I keep a Mac around for times when Gnome is kind of broken.

cmd shortcuts which don’t interfere with app shortcuts.

Powerful desktop Arm chips.

Gui to manage services.

Gui to manage firewall.

Easy fleet management tools.

A real terminal services and Remote Desktop solution.

Desktop icons.

Tighter userland security.

Tighter OS security. Mostly dm-verify and fs-verify.

Tiling support. (There are extensions, but I need to experiment.)

Not having to recompile out of tree kernel modules after a kernel upgrade.

Base and extras being cleanly separated.

A minor but useful GUI feature on MacOS in list view is showing the size of directories as well as individual files and being able to sort by those sizes. That extra step in Linux of having to contextually click on a listed directory and choose "Properties" all the way at the bottom of that menu is a minor annoyance

I missed Odin 3 for a few years until I switched to Graphene and never looked back. In tried the FOSS package it didn't work for me and the documentation was beyond my skills at the time.

I miss the stupid people comradery, sometimes. People act funny when you're a normal stupid person and use Linux without the hoodie and a Matrix screen saver.