Krita - Krita is a professional FREE and open source painting program. It is made by artists that want to seaffordable art tools for everyone. Concept art. texture and matte painters, illustrations and comics.
Adobe XD - Adobe XD is an all-in-one UX/UI solution for designing websites, mobile apps and more.
Artrage - A simple but lovely natural media painting and sketching program.
Canva - Canva is a graphic-design platform with a drag-and-drop interface to create print or visual content while providing templates, images, and fonts. Canva makes graphic design more straightforward and accessible regardless of skill level.
Procreate - Procreate is the most powerful and intuitive digital illustration App available for iPad®.
Creatopy - Creatopy is an ad design platform that helps businesses customize, automate and scale up their ad production and delivery.