Krita (formerly called KImageShop, Krayon) is a free, open-source and cross-platform digital painting software developed by Krita Foundation (part of the KDE Community) from Sweden. It is fully functional, capable of the entire painting process from drafting, lining, coloring to post-adjustment; can draw concept sketch, illustration, cartoon, animation, scene and 3D mapping; supports digital board, pressure sensing, anti-shake, layers, filters, color management, and other functions.

CorelDRAW Graphics Suite is a very popular graphics design software with powerful and easy-to-use functions, launched by Corel Corporation from Canada for the first time in 1989. Many magazine covers, film posters, product trademarks, book illustrations... that we can see in daily life are all designed using it. Nowadays CorelDRAW Graphics Suite has become one of the must-have software together with Photoshop for most graphics designers.

First of all, ComicStudio (discontinued) - Manga Production Software, IllustStudio (discontinued) - Illustration Production Software and CLIP STUDIO PAINT (CSP for short) are all products of CELSYS company from Japan. CLIP STUDIO PAINT (generally called CSP for short) is a newly released standard drawing tool for illustrations and comics as CS and IS's successor.