Handsome Illustrations - Create unique illustrations for websites & applications.
Isometrica - 3D illustration constructor with 380+ isometric objects
Control Illustrations - 108 free flat illustrations with customizable characters
Characterz - Biggest diverse mix and match 3D illustration library
Ouch! Illustrations by Icons8 - Professional, perfectly matching, and customizable illustrations for any designs
Shapefest - A massive library of 3D shapes for everything!