Adobe Photoshop - Adobe Photoshop is a webtop application for editing images and photos online.
Let's Enhance - Image upscaling supercharged
Polarr - MacOS, Windows, iOS, Android and online photo editing tools & free photo editors.
AI Img Enlarger - Enlarge Images Without Losing Quality Online
Fotor - Fotor is an all in one visual platform. It includes photo editor, collage maker, and graphic designer. You are free to make a visual look more beautiful.
A.I. Gigapixel - AI based image resizer