iDraw
iDraw is a powerful feature-packed vector design and illustration application, available for both Mac OS X and iPad. All of the tools you need to create everything from detailed technical illustrations to beautiful works of art.
15 Alternatives To iDraw

Adobe Fireworks
Adobe Fireworks is a bitmap and vector graphics editor.

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.

Pencil2D
Pencil2D is an opensource animation/drawing software for Mac OS X, Windows, and Linux, based on old…
RawTherapee
RawTherapee is a free RAW converter and digital photo processing software.

Sweet Home 3D
Sweet Home 3D is a free interior design application that helps to draw the plan of house, arrange furniture on it and visit the results in 3D.
Vectr
Free vector graphics editor. A simple yet powerful web and desktop cross-platform tool for everyone.