Photopea has great psd implementation and support which i would say is better than krita and gimp, they say they got it from here https://www.adobe.com/devnet-apps/photoshop/fileformatashtml/ idk if you guys have used that so i thought i might just share it
Sorry, but this is a bug tracker, not a suggestion board. And since Photopea is not open source, they have access to Adobe's SDK and documentation, which makes it easier for them to implement PSD support. And, of course, our PSD support is already really good...