@AhabGreybeard or @Michelist would Ps brushes work in Krita?
The simplest possible answer is: “No!”
But if you are willing to tinker with the options Krita’s brush-editor offers, you are able to recreate the settings of the brush you want to port to Krita. Odzuki did this once with his incredible set, that you can find in our resources’ category.
In some cases, it can be needed to convert these ABR-Files first in order to make them readable for Krita, because of newer PS-Versions with slightly modified code of these ABR’s. Most of these ABR’s are convertible, but some not. Those who are not are, as far as we know, ABR-Files that are corrupted (then it won’t work elsewhere), or copy protected, or they contain so-called “artistic brushes”.
The issue with PS-Brushes is that Krita can only read and use the brush-tips contained in the ABR-Files. But to make a brush tip a working brush, you need the settings that make the brush tip a brush too, and those can’t be read by Krita, you have to reverse engineer those settings. But since you can’t tell beforehand whether this reverse-engineering process will be successful, you would have to take the risk of possibly throwing hundreds of hours of work into the trash can, a risk that is not worth trying at this time. Because Krita’s resources and the number of available developers rather do not allow this at the moment.
That is, because PS is a closed source software, and if you want to use parts of their code, that would be needed to fully support ABR-Files, you have to pay for it, a thing that regarding the prize Adobe wants may be possible, because in other software ABR-Files are supported because they paid Adobe for it (but I don’t think it would be cheap), or because they were able to invest the work to successfully reverse engineer these ABR’s. But Krita would never get such code from Adobe, that is because Krita’s license requires to publish its sources, and then the code from Adobe had to be published too, a thing Adobe would not allow before the day the hell freezes over.
But in principle you could have found out all of this by using the forums search-facility, reachable via the big magnifying glass-symbol on top of the forum sites and search terms like “photoshop brushes” or “ABR”…
Michelist
Add/Edit: Sorry, I just saw that this wasn’t your topic. Why didn’t you ask this question in its own topic created by yourself as you always know that this is the way this forum works?
@AhabGreybeard, @sooz, @raghukamath: Can you please be so kind to cut out these two posts and put them into a new topic? I was unfortunately inattentive when I wrote my post.
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Thank you, @raghukamath!
Michelist
I already tried to open old brushes that I made in Photoshop, in Gimp: they open, but all the effect is lost. Unless it’s a very special (and rare) brush, it’s better to look for another, similar one.
Or try alternative means: in certain cases, I find it quicker and easier to apply a texture and edit it with transparency masks and layer modes, or see if you can get the texture through filters.
One detail: Photoshop brushes running on Windows don’t work if you try to use/install it on Macintosh Photoshop. I already tried that once and the Macintosh just ignored my brushes… 
@Michelist tbh I didn’t find this question asked elsewhere cause I did look but maybe not well also wasn’t sure where to ask. But thank you for your answer.
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