Renoise also supports Linux.
OS agnostic, web-based Totalmix (even allowing for the possibility that latency/performance might be affected when in use). I imagine this could be a useful option to have even outside of Linux too.

At least an unofficial webUI already exists: https://huddx01.github.io/oscmix/

For details, see: https://github.com/huddx01/oscmix#web-ui

The logical solution I've always thought of seems to have been glossed over on the previous page - that of an officially supported, OS agnostic, web-based Totalmix (even allowing for the possibility that latency/performance might be affected when in use). I imagine this could be a useful option to have even outside of Linux too.

The same DAWs recommended @sjzstudio to me...
So I'll dive in to Ardour and Mixbus the next weeks/months    

Thank you both a lot!

The Reaper forum has a Linux part. It is a huge community there sharing all knowledge tips and tricks, it is a goldmine for you.

https://forum.cockos.com/forumdisplay.php?f=52

DAWs currently available on Linux include Ardour, Harrison Mixbus, REAPER, Studio One, Tracktion Waveform, LMMS and Bitwig Studio.

Based on my own experience, I have mainly used Ardour and Mixbus, which share the same foundation. Both have a lot going for them, especially if you are coming from something like Pro Tools, as the overall logic and workflow feel quite familiar.

Ardour is very stable and lightweight. It is capable of handling essentially everything you would expect from a modern DAW. For some users the interface might feel a bit rough or less polished compared to something like Logic Pro, but that ultimately comes down to personal preference.

Mixbus stands out with its analog style mixer and workflow. It has a certain sound and feel that makes mixing particularly enjoyable. I consider it an excellent tool especially for mixing. It is also worth noting that while Mixbus fully supports recording and all other production tasks, it is somewhat heavier on the system compared to Ardour due to its design.

I personally use both depending on the situation. Ardour works extremely well for recording, while Mixbus often feels more natural for mixing. Editing is very well thought out in both.

I have heard a lot of good things about REAPER, especially regarding its efficiency, flexibility and lightweight nature. Many describe it as a power user DAW that can be shaped into almost anything if you are willing to invest the time to learn it properly.

Others can share their own experiences and elaborate further on how these compare to something like Cubase or other mainstream DAWs.

I could link a few tracks I have worked on, but if that might cause any negative reactions for some people, I will leave them out for now.

Finally, with RME Fireface interfaces and Ubuntu Studio, everything works together very tightly in CC mode.

Maybe one personal question (to experienced linux users), regarding DAWs:
Which one is the most professional one?
Which one gets quite near to the capabilities as Logic/Cubase offer?
Please, no DAW bashing, etc...
Personal experience/recommendations would help me to safe waste of time diving in to each of the (IMHO there are 3?) well-known available on linux.
Yeah, I know/tested them all already.. But you know how it is: The deeper pros/cons appear after a long time working with real projects, etc... Thanks!

And design of Apple Silicon CPU has its advantages and disadvantages...

Also the fact that Mac is closed platform and Apple develops the both HW, OS and most of user SW is the advantage. But it has also drawbacks...

Weak point of Apple devices is that there is only limited set of HW configurations.  And Apple does not care about compatibility...

Win may be pain, but it is mainly when one buys rather cheap computer using poor HW parts with poor drivers... But still I have been using Win 30+ years on several tens of computers and no real problems...

And Linux goes even one step further. There is vast variety of HW (even wider than on Win) and vast variety of OSes... That brings even more freedom, but has its costs... But I am not Linux user, so I cannot comment more.

My point is that there is never just one single “best” option that works for everyone, because the world is imperfect, and it always will be.

What's wrong with em dashes and other typographic symbols? For instance, I use a keyboard layout that has all kinds of dashes and other typographic symbols easily accessible

Nothing is wrong with that at all. Sorry if I was unclear. Its just my personal "doubt"...

Additionally your Em Dashes (—) in your text make me doubt whether this is really your pure personal opinion or something AI-assisted.

What's wrong with em dashes and other typographic symbols? For instance, I use a keyboard layout that has all kinds of dashes and other typographic symbols easily accessible.

What I agree with you on, is that the FILMTOOLS post indeed looks like trolling, especially in light of the well-known issues with USB audio on M1 Macs.

So far, the only platform I consider truly suitable for professional work — without needing constant maintenance and troubleshooting — is macOS, and especially my MacBook Pro M1.

IMHO any decent computer with MacOS/Win/Linux is suitable for Pro work. And each of those three platforms has its advantages and drawbacks...

Linux arguably supports especially older machines better than any other platform, which makes the "macOS is the only professional option" conclusion feel a bit premature.
I have an old MacBook Pro 2010 17" model here. Paid 3500 bucks for it. Well, with Apples latest supported macOS - forget it. No "modern" Apps/Drivers run on it. According Apple, I should throw it to trash.
Via OCLP, pimped to Ventura - usable, but with many limitations.
So, today, I am running latest debian trixie with gnome on it. Sure, old Hardware, 8G RAM, not expecting maximal performance, 120 Tracks in a DAW, etc… But everything runs a lot smoother than  on any other system.

However, this is just one reason I am personaly preparing to switch completely to Linux in the next 2-3 years…

Additionally your Em Dashes (—) in your text make me doubt whether this is really your pure personal opinion or something AI-assisted.

Windows is one of the worst platforms to build a truly professional audio environment on, especially when the same machine also has to handle demanding video and 3D work. I am still on Windows 10 because it can be managed to a certain extent, but in my experience, latency-related issues can never be fully eliminated. The platform is simply not implemented well enough for consistently reliable low-latency audio performance.

And as for USB, in my opinion, it has never delivered as advertised in real-world professional use. I understand that this is not necessarily RME’s fault, and I also recognize that their drivers are among the best available. But the idea of “rock-solid drivers” only holds true up to a point, especially once you start pushing lower buffer sizes over USB.

Even after applying every optimization and tweak recommended on this forum, Windows still ends up causing problems from time to time. It may improve things, but it does not fully solve them. Maybe USB 3 devices perform better, but I cannot speak to that from enough direct experience.

So far, the only platform I consider truly suitable for professional work — without needing constant maintenance and troubleshooting — is macOS, and especially my MacBook Pro M1.

Nice, you'll stay here and glad to hear oscmix(-qt) looks promising for your setup. Development is ongoing, and there's still a lot to improve, but the direction is clear.

If you ever run into issues or want to share feedback, feel free to open an issue. You know where my repo is located...

Just to clarify my situation a little bit: I’m using RME Fireface series devices, and from my perspective the work maggie33 has been doing around using them on Linux is probably the most relevant project going forward.

Class-compliant mode with these devices already works very well, and if the functionality provided by the oscmix application continues to develop, it would basically cover everything I need for the foreseeable future.

So for me personally, that path already looks quite promising for Fireface users on Linux.

Thanks again for the discussion.

p.s.
maggie33, that feels like the right direction for the osxmix application.