Screenshot Bin - Generate website screenshots and thumbnails at scale, right from your app. Screenshots as a service.
Handsome Illustrations - Create unique illustrations for websites & applications.
Passion Hacks - 170 Free isometric illustrations available as PNG & SVG files.
Control Illustrations - 108 free flat illustrations with customizable characters
Isometrica - 3D illustration constructor with 380+ isometric objects
Ouch! Illustrations by Icons8 - Professional, perfectly matching, and customizable illustrations for any designs