Humaaans - Mix-&-match illustrations of humans with a design library.
Isometrica - 3D illustration constructor with 380+ isometric objects
Avataaars Generator - A simple avatar generator
Characterz - Biggest diverse mix and match 3D illustration library
AVATARZ - Lovely library of diverse 3D avatars
Khagwal 3D Illustration Library - Free 3D illustration library for web & mobile app designers