Adobe Photoshop, GIMP, Krita, Paint.NET, Procreate, PaintTool SAI, Photopea, MediBang Paint, MyPaint, Fresh Paint, Artrage, HiPaint, Mischief, LunaPic, ChibiPaint, Sony Sketch, AzPainter, openCanvas, Tux Paint, Paintbrush, Tayasui Sketches, KolourPaint, Charcoal, PaperColor, CinePaint, Pocket Paint, Picozu, Flame Painter, RealWorld Paint, Psykopaint, Artecture Draw, Sketch, Paint, Paintstorm, Clover Paint, JCDSee, Ravioli Paint 2, Milton, Flow by Moleskine, Luminance Studio, Pixia, Chasys Draw IES, Image Analyzer, Gimp Painter, Photobie, Comicado, TiltShift Generator, Splashup, MDIAPP, TIFFany, imEditor, PaintRibbon, Sagelight, ChocoFlop, MangaLabo, PhotoPerfect are some alternatives to FireAlpaca.