Synfig Studio - Just another WordPress site
Open Peeps - A hand-drawn illustration library.
Live2D Cubism - Live2D is the world's first drawing technology to enable 3D rendering of 2D images.
Control Illustrations - 108 free flat illustrations with customizable characters
Creature - Creature 2D Skeletal and Mesh Animation Tool
Handsome Illustrations - Create unique illustrations for websites & applications.