Inkscape is a free and open-source vector graphics editor used for creating or editing vector graphics such as illustrations, diagrams, line arts, charts, logos, and complex paintings. It supports a range of advanced SVG features including markers, clones, alpha blending, and transparency. The software also includes drawing tools such as a pencil tool, pen tool, calligraphy tool, and shape tools, as well as path editing and node editing tools. Other features include layer management, object manipulation, text support, and a wide range of file formats for import and export.