Headers.me - Create social cover images that get you followers
Screenshot Bin - Generate website screenshots and thumbnails at scale, right from your app. Screenshots as a service.
Picmaker - Design the Future
Passion Hacks - 170 Free isometric illustrations available as PNG & SVG files.
Slickr - Powerful cover image generator for your Hashnode blog
Isometrica - 3D illustration constructor with 380+ isometric objects