All of these Resources are easy to use and can present your information beautifully. Some are free, while others cost a few dollars.
Mockup is a medium or high detailed static representation of the design. Very often mockup is a draft design or even the actual design layout. Mockups are very good for the approval of interested persons, who aren’t involved in the development of design.
Thanks to the visual nature of mockups, design can be perceived more easily than low-detailed artifacts, and at the same create a rapid prototype. They are good for collecting feedbacks, and can be used in the documentation.
More great & free PSD Mockups Collection:
Available Format: Layered PSD through smart object insertion
License: Free for personal and commercial use
Zip File Includes: Photoshop PSD File
Resolution: 3000 x 2250 px