What are the best proprietary/paid apps for linux?

Steam probably.
- I won't say it's "best", as I just want to run a game without friendlists and other bloat, so I really hate the fact Steam is nessesary for so many games.
  But I would call it "essentiall".
- Yup, as time went on, I simply felt less need to have proprietary software on my system. Steam remains as an exception; simply by virtue of having no F(L)OSS alternative (AFAIK).
  
  Steam itself isn't that special and things like Heroic exist but where Steam wins is the ecosystem. Also Valve sponsor developments of Linux desktop technologies, so even if Steam itself is proprietary, some of the money ends up advancing open source.
- Valve has put a lot of work into helping WINE & Linux. Even if it was a selfish play to break free from Microsoft & other app stores to lock those into their marketplace fee, I can’t help but be grateful for the better ecosystem & uptick in users. Since they are privately held too, they aren’t in the same business of chasing quartely profits or making the experience worse & worse by selling your data & slapping ads everywhere.

Although I don't use them, the Jetbrains products should be near the top of the list.
- Was going to say this. Pycharm is probably the only paid software I use. With that being said, students don’t need to pay for it, so I don’t have to worry about that.

DaVinci Resolve is THE video editor on Linux. Unfortunately the libre apps for it don't get even close, to the point that even with all the limitations in the free and paid versions, it still is the best option.
Also shout out to Bitwig Studio, although I don't use it.
- KDEndlive is pretty solid, imho
  
  It is, but when it comes to more complex needs, it falls short. It is really good for simpler editing needs and it is getting better fast.
  
  Honestly IMO it's not even a comparison whatsoever. Kdenlive cannot be used professionally for any real work, it will just crash on you before you even find out it can't even do what you want. I've tried it off and on for many years and it's always a massive disappointment compared to pro solutions.
  
  KDEnLive is a good "editor" for simpler projects, but not a good video editing "suite". It comes nowhere near Resolve's color grading ability, or even audio editing ability these days. And it has no compositing ability at all. In fact, except Natron on Linux (that gets updated once every 2-3 years with just bug fixes and not many features), there's nothing about compositing. Blender's compositing is unusable btw.
  
  I see it has two different products for two different use cases. Kdenlive is for those who missed Windows Movie maker or iMovie. Something to stitch together videos, or split apart videos.
  DaVinci Resolve is for those who need stable professional software like adobe.
  Not saying that kdenlive can’t be used professionally but I found its stability lacking, its tools unpolished and its functionality limited. The only benefit is that it can handle aac audio, and export it too thanks to ffmpeg.
  
  Solid? I'm a casual user for occasionally editing video and it crashes all the time. It's easily the least stable Linux application I ever use.
- I personally use Shotcut but i only do basic editing.
- Can you run it on anything besides cent yet? I tried it a few years ago and it fell flat on its face
  
  it totally does, it's pretty easy to install and run on regular distros and just a bit more work to do in immutable ones, but with davincibox it's bound to get better

Steam
vibeogames

Reaper. Great usability and decent Linux support out of the box (looking at you, davinci resolve). Generous free trial and a cheap one-time payment for a license. LMMS has served me well and is fine for basic stuff, but reaper is a whole other level, both in features and usability. I've heard good things about ardour too but have yet to give it a try.
- Reaper is awesome.
- Would you mind linking it?
  
  https://www.reaper.fm/

Half-life: Alyx, Baldur's Gate 3, Elden Ring, ... you get the idea. It's not so much those apps per se, and I'd prefer them to be FLOSS too, rather it's the amazing content and in such rare cases, I'm happy to financially support the creators.
- What aren't you happy to financially support creators of open source software you like?
  
  My formulation wasn't clear, I meant to say I'm happy to support creators in general that make quality content, software or not, but I would always prefer to support open source, open hardware, remixable content, etc rather than closed and proprietary alternatives. I listed games as very rare examples where I'm still happy to support them even if I still wish that the software itself would be made open, even if delayed as Quake or Doom for examples have been. Does it make more sense now?

Does it count as paid if I donated what I think is a reasonable price?
Cause then it's KDE, Firefox, Thunderbird, LibreOffice and Gimp. I'd prefer those programs even if their proprietary counterparts were free.
- Came here to say this too... I contribute a few €/£/$ per month to various projects...
  I won't get all righteous here, but just because you don't have to pay, doesn't mean you to say you can't support the developer(s)...

I like Sublime Text and Sublime Merge and use both daily.

I would never willingly use proprietary software. I don't mind paying if I also have access to source code that is licensed foss.
- That's nice. Some of us have work to get done though.
  
  I’d love to see a complete CAD package that feels more in line with Inventor. Ondsel is definitely getting there, but it’s PDM (like git, but for parametric CAD) is still closed source and not self-hostable. Their git repo is also a bit confusing. Apparently part of their patchset on the “flavor” branch they ship isn’t open to the public? Still, nice to see a (partially) FOSS solution.
  
  Use work machines for work. Compartmentalized when you can.
- I while I understand the sentiment, I have found that paid software is more polished than foss software… most of the time. And when I need to get work done, I want to ensure that my software is stable and I will pay to do so.
  That said, I feel software is like a bell curve, and the older the type of software is, the more it should be FOSS. Like word processors, 3D modelling, or image manipulation should be foss, while video editing and 3D scanning software is OK to be paid.
  What I feel everyone should agree with is not being forced to use a subscription service to use the software. I will boycott software if it forces that upon their customers, looking at you Adobe, Autodesk and Microsoft.
- I wish that was possible, but it's not feasible to get a lot done on a 15 year old ThinkPad or whatever, that doesn't have any proprietary firmware.
  
  You can at least use foss apps and keep the binaries to a minimum

I paid for Vuescan. There are a ton of Linux scanning apps, but pretty much all of them require editing all pictures to some extent after the scan. Vuescan applies a useful set of defaults that work for most pictures, speeding up the work flow. I had over 4,000 pictures to scan so anything to simplify that was worth it.
- Vuescan is great, and near as I can tell it's one guy. Totally worth it.
  
  Yeah, I think you're right. I forgot to add that there's no mucking about with drivers and all of that, it really just works. Older scanners usually aren't a problem with Linux, but Vuescan almost certainly supports them as well.

Pycharm professional and Steam are pretty dope
- It’s so odd how proprietary software is frowned upon so much in this community, but no one cares when it comes to gaming.
  
  Even Stallman said games are an unfortunate, but reasonable exception. Of he can see it, anyone can.
  
  It is a bit different. Have you invested thousands of hours developing skills with a piece of productivity software, and locked your data into their proprietary data format? Has that vendor looked at your investment, and found that they have plenty of leverage to turn the screws on you?
  With a game, you invest tens of hours developing skills, lock your "master sword" in a proprietary save format, and then you save the princess. After that, you're done. It is an ephemeral experience, give or take wanting to replay a few really good games. The game vendor doesn't have that much hold over you, and their grip doesn't get stronger the more you use it. I can replace your game with hundreds of other games, and I don't really lose anything by doing so.
- I have some hobby projects in Python but I've never needed the pro features, I do pay for Clion though

Lightburn for controlling laser engravers.
It's pretty much the only choice on Linux (though it is cross platform). Free 30 day trial, then ~$80 lifetime licence.
The other choice is LaserGRBL, which is open source, but doesn't seem to have a Linux port for some reason. And it has a lot fewer features, with a more complex workflow.

Does Unraid count as paid Linux itself, not just a Linux utility?

Dungeondraft, Wonderdraft, FoundryVTT. Battle map making, world map making, and virtual table top respectively
- I know you can't make battle maps with it but have you hear of azgaar ? It's an awesome open source world map maping web app !
  
  I'll check it out, thanks!

When it comes to 2D CAD/CAM, then QCad is the best. They have a GPL version, but their commercial version has a lot more features, like importing/exporting most Autocad files, and CAM functionality. For just $40 bucks, it's worth every penny. The only disadvantage it has is that it can't ever have an ARM version, because the plugin they use for Autocad files is licensed, and it only exists for x86 afaik.
- I’m really hoping for the 3D options. If OpenSCAD isn’t a good fit then I still boot to Windows for CAD :(

Some rare games that don't scam you.

gitkraken has a lot of features that I never use. But showing the various branches and their connections as a color-coded tree is worth paying money for.
- What about gitk & gitg?

Reaper DAW, for (attempting) making music

OpenAudible - because Audible cycles books in and out of the membership too fast and sometimes their phone app sucks.
- Agreed, OpenAudible is fantastic. I've been an audible member for ages. I really only listen to my books when commuting and traveling and the pandemic set me back in my listening. Using OpenAudible allows me to keep my library available on any device and use any application to listen.

I like Insync. It synchronizes with Google Drive, OneDrive, and Dropbox. It is not the only client out there but it works better than the other ones I’ve used.
- rclone, but there's no GUI
  
  Actually it has two GUIs, it has its own web GUI or you can use rclone browser
- +1 for Insync

- The one you know is called RStudio.
- So did you pay like $800 for that?

moneydance for household finance tracking
- Step 1: reduce your household spending by avoiding useless paid software.
  
  Fair, but last time I tried them, the foss apps were awful. But that was several years ago so might be worth looking again

Maya, the 3d software.
- Also Modo

Pianoteq for virtual piano emulation with MIDI keyboards.

SAP S/4HANA
If expensive and proprietary is what you want, it's hard to beat.
- IBM Maximo :) Both are expensive but not for you average consumer.

WinRAR -s, honestly I haven't paid for anything since I switched to Linux because everything is open source or freemium not that I paid for anything when I use windows anyway I quacked almost everything but I did bought Terraria and Half Life series
- You joke, but I actually have a license key for WinRAR that I use with the native rar cli on my Linux machines.

MakeMKV. It's better than anything else.

Not sure how decent yet, but got recommended Beyond Compare at work, which is a trial software and recently discovered it runs on linux.
It's basically a file compare tool, but can also compare images and looks really nice.
It also features, like on Windows, really handy entries for the right click menu of pretty much all popular Linux File managers.
I just bought a standard license for version 5, because it seems awesome and I wanna use it more.

Bitwig studio

L Vue scan pro is a must if you're into analog photography. The software that usually comes with scanners and printers generally doesn't work on Linux and if it does it's terrible.

I plan to pay for Immich

Warp terminal. I like it

Never using proprietary software again. Maybe the only who can one be used be me and other foss' person could be steam..

Master pdf editor

I'm sure there are some closed softwares left worth paying for but personally I would stop paying for all of it.
The only software left that I pay for is phpstorm and it's buggy as hell and for every bug report I get a "well, nobody really cares". Then what the hell am I paying for?
Well I'm paying for features not found in other systems but seriously, it soeerds my work up by 300% and slows it down by 200% due to the extreme amount of bugs.. it's not acceptable for a paid product but unfortunately there is no good alternative open source product yet.
- What is it in PHPStorm that isn't available in any other editors or IDEs?
  
  I don't know other IDE's very well, haven't used others in years.
  Amongst things... PHPstorm allows me to rename a method and it will automatically rename that method in any extended class, interface, etc, and any call to they method too. It usually, mostly, does a reasonable job at it, but sometimes it forks up big time.
  I guess I am willing to try eclipse again, see how well that goes.