Device Shots - Generate high-resolution device mockups using a screenshot.
Icons8 - Free app for Mac & Windows already containing 39,800 icons. Allows to search and import icons…
Mockuuups Studio - Fast and easy way to create product mockups on macOS, Windows and Linux.
Humaaans - Mix-&-match illustrations of humans with a design library.
Screen Size Map - An interactive map of screen sizes for responsive web design
Control Illustrations - 108 free flat illustrations with customizable characters