Humaaans - Mix-&-match illustrations of humans with a design library.
Vectr - Free vector graphics editor. A simple yet powerful web and desktop cross-platform tool for everyone.
Handsome Illustrations - Create unique illustrations for websites & applications.
Vecteezy Editor - Free Online Vector Editor - Design and customize SVG illustrations and graphics quickly and easily in your browser.
Blush - Illustrations for everyone
Inkscape - Inkscape is a free, open source professional vector graphics editor for Windows, Mac OS X and Linux.