The information in this article is designed to inform users interested in purchasing Adobe Illustrator of a potential free alternative. Adobe Illustrator is part of the Adobe Creative Cloud now, and involves annual licensing costs that turn most folks off (https://ramtech.colostate.edu/departmental/software/#adobecc).
Inkscape is a free and open source vector graphics editor for professionals and is available here: https://inkscape.org
Along the same vein as the recent article comparing GIMP and Adobe Photoshop (https://wp.natsci.colostate.edu/cnsit/gimp-vs-adobe-photoshop), I don’t use Illustrator myself, and therefore am a poor source for determining whether this is a good alternative or not. However, there are plenty of comparisons online from folks that actually do use this stuff. Check out the following: