Qillo – Custom brand illustrations with predefined styles & up-front cost.
Storytale — High-class web assets under simple subscription
100 Userpics for free use
Avataaars — Avatar Illustrations Sketch Library
Open Doodles - Free sketchy illustrations
Formfrom | Contemporary Vector Illustrations for Websites and UI
Craftwork: UX/U kits, templates, vector and 3D illustrations
DrawKit - Beautiful vector illustrations
unDraw - Open source illustrations for any idea
designstripe | Create & customize beautiful illustrations
https://ui8.net
Storyset: Customize, animate and download illustration for free
Open Peeps, Hand-Drawn Illustration Library
Illustrations of Black People for Your Next Digital Project | Black Illustrations
Blush: Illustrations for everyone