Empty Box Mockup
The best Box Mockup allow you to make changes such as you can place your design via smart-object layer and also change the color of box. You can paste your design to any visible part.
Free

The best Box Mockup that contains 2 standing-up boxes is ideal for a collection of softwares that hold the same design pattern but differ in colors and texts. Place your artwork on bottom/top, front and left panels by using smart objects.
