Todoist - Todoist is a to-do list that helps you get organized, at work and in life.
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.
TaskPaper - Plain text to-do lists for Mac
Autodesk SketchBook - SketchBook drawing and painting software provides designers, architects, and concept artists the tools to sketch ideas quickly and create beautiful illustrations.
Listy Beta - The things you love, privately saved and beautifully listed
Clip Studio Paint - The artist's software for drawing and painting.