Adobe Photoshop, GIMP, Krita, Paint.NET, Photopea, Affinity Photo, ACDSee Photo Studio, Photoscape, Pixelmator, RawTherapee, Pixlr, ImageJ, Polarr, PixTeller, Black Ink, Livebrush, Photoleap, openCanvas, APITemplate.io, photivo, Panzoid, Pixlr-o-matic, Fotowall, AndreaMosaic, SceneLab are some alternatives to Photomator.