Humaaans - Mix-&-match illustrations of humans with a design library.
Animo.js - Animo.js is a lightweight, open-source tool that enables developers to manipulate animations and transitions.
Control Illustrations - 108 free flat illustrations with customizable characters
Magic Animations CSS3 - CSS3 Animations with special effects.
Ouch! Illustrations by Icons8 - Professional, perfectly matching, and customizable illustrations for any designs
Ceaser - Ceaser is a handy CSS Easing Animation tool for creating any ease imaginable.