Autodesk SketchBook is a long-standing favorite for digital artists, known for its clean, "uncluttered" interface that prioritizes the drawing space

3. The Coptic Marker Library

If you are a concept artist or illustrator, the Copic color library is a game-changer. The Pro version unlocks all 358 Copic colors, allowing you to simulate marker blending digitally—perfect for fashion design or comic flats.

. Most of the "Pro" features that users once had to pay for are now included in the free version, or available through a very affordable one-time Premium Bundle