Affinity Photo is described as 'professional, full-featured raster graphics editor. Working in Affinity Photo is always live and you can pan and zoom at 60fps, with live previews and non destructive application' and is a very popular Image Editor in the Photos & Graphics category. There are more than 50 alternatives to Affinity Photo for a variety of platforms, including Windows, Mac, iPhone, Online / Web-based and iPad. The best alternative is GIMP, which is both free and Open Source. Other great apps like Affinity Photo are Krita (Free, Open Source), Adobe Photoshop (Paid), Paint.NET (Free Personal) and Photopea (Free).
Bluetail is a beautifully designed easy to use vector drawing application to help you create inspiring vector graphics. Bluetail has all tools, giving you power that let you draw any kind of shapes, technical illustrations and beautiful art.
AliveColors is comprehensive graphics and photo editing software for Windows and Mac. It comes in Free, Home, and Pro versions, with differing levels of functionality. Boost your creativity with AliveColors!.
Picture Window Pro is a powerful image editing tool designed for serious photographers with demanding creative and quality standards. Its comprehensive set of photo manipulation and retouching tools allow you to control and shape every aspect of your images.
ACD Systems Canvas Draw 6 is a powerful software specifically designed to make it possible for small business owners, designers, illustrators, and professionals to advertise and communicate with confidence.
Photoshop in the browser? Photoshop ? Flattering, but not quite. BitMappery does however allow you to import photos, apply transformations, tweak filters and draw masks in a non-destructive manner. It has some overlap in functionality but is definitely a more simple product.