Autodesk SketchBook might be a bit more popular than Samsung DeX. We know about 1 link to it since March 2021 and only 1 link to Samsung DeX. We are tracking product recommendations and mentions on various public social media platforms and blogs. They can help you identify which product is more popular and what people think of it.
Possibly! If you go to http://samsung.com/us/explore/dex/, you can still download the Dex Mac app. It didn't work on my Mac with S22, but people have been able to get it to work with S21 and older even after they dropped support. You'll need to connect a USB C cable from your tab S7+ to the Mac, as it doesn't support wireless. Source: about 2 years ago
Try sketchbook.com, the official site. I don't know if it's different from the Microsoft store version, but it might be. There should be a free trial. Source: over 2 years ago
scrcpy - Display and control your Android device from your computer
Krita - Krita is a professional FREE and open source painting program. It is made by artists that want to seaffordable art tools for everyone. Concept art. texture and matte painters, illustrations and comics.
Duet Display - With Duet Display, you can transform your iPhone or iPad into a second display to expand the screen space of your PC or Mac system.
Procreate - Procreate is the most powerful and intuitive digital illustration App available for iPad®.
Vysor - Vysor lets you view and control your Android on your computer.
ibis Paint X - Drawn with + ibisPaint