Photopea is described as 'Browser-based editing supports complex layers, masks, and adjustment tools, opens PSD, XCF, Sketch files, and exports in over 40 formats, all client-side for privacy' and is a very popular digital painting tool in the photos & graphics category. There are more than 100 alternatives to Photopea for a variety of platforms, including Windows, Mac, Web-based, iPhone and iPad apps. The best Photopea alternative is GIMP, which is both free and Open Source. Other great apps like Photopea are Krita, Adobe Photoshop, Paint.NET and Affinity Photo.
Photopea alternatives are mainly Image Editors, but if you're looking for
Photo Editors or Digital Painting Tools you can filter on that. Other popular filters include
Free,
Linux and
Android. These are just examples - use the filter bar below to find more specific alternatives to Photopea.