Freepik - More than a million free vectors, PSD, photos and free icons. Exclusive freebies and all graphic resources that you need for your projects
Mockuuups Studio - Fast and easy way to create product mockups on macOS, Windows and Linux.
Pexels - Find the best free stock images about Browser Home Page. Download all photos and use them even for commercial projects.
Smartmockups - Create product screenshots with just a few clicks, for free
Unsplash - Unsplash is a website with high-quality free HD images. It has a catalog of more than three hundred thousand striking images that are neatly organized with tags. Read more about Unsplash.
Magic Mockups - Place your product screenshot in real-life environment.Free iMac and iPad mockups ... read more.