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.
Paper by WeTransfer - A collection of creative prompts
Adobe Photoshop - Adobe Photoshop is a webtop application for editing images and photos online.
Milanote - Milanote is a note taking app for creative work.
Corel Painter - Corel Painter is media painting software.
Astropad - Astropad is a free form drawing tool designed from the ground up to take advantages of the features offered by an iPad.