One of the best is Skylum, an AI-powered photo editing software that can handle JPEG, PNG, TIFF and RAW files. It's got a clean interface with powerful AI tools, so it's good for beginners and pros alike. Skylum can be used alongside other popular editing tools like Adobe Photoshop and Lightroom, and it's got a busy marketplace with more than 800 editing plugins.
If you need something that works online, PhotoKit is a good option. It can handle a lot of file formats, and you can use it through modern browsers on desktops, laptops, tablets and smartphones. PhotoKit has tools for editing images, removing backgrounds and improving image quality, and it protects your privacy by not storing any images on its servers. It's got a free online service, too, with a VIP subscription if you need more.