sK1 2.0
sK1 2.0 is professional quality open source illustration software for Windows, GNU/Linux and macOS platforms. sK1 2.0 is a powerful and mature application that makes users more productive and provides them professional and free solution even for exotic *nix OSes. Whether you are a newbie user or an experienced designer, sK1 2.0 makes it easy to get started. With its professional color-management engine and wide-range file format compatibility, sK1 2.0 provides color accuracy and drawing flexibility you need for all types of projects.
The application is written using wxWidgets toolkit, so it is a real cross-platform software which uses platform specific controls. sK1 2.0 supports professional publishing features, such as multiple page document, CMYK color, separations, ICC color management, professional precise printing and press-ready PDF output. So this application could substitute professional proprietary software like CorelDRAW or Adobe Illustrator.