Open source vector graphics package Inkscape is staggeringly powerful, and is the best free Adobe Illustrator alternative for pro and semi-pro illustrators, graphic designers and web designers.

Inkscape is consistently chosen as the best alternative to Adobe Illustrator ... Drawing vector graphics often leads to a ...

A full-featured drawing program for Windows and Mac from Adobe. Originally developed for the Mac in 1987 and Windows in 1989, Illustrator has been the most widely used vector graphics editor.