An ultimate collection of 1000+ free mockup templates PSD designs. The complete collection of free design mockup PSD templates for various kinds of graphic designing. EVERYTHING YOU CAN THINK OF IS HERE!
Here is what I found on the bottom footer portion of site for anyone worried about usage rights.
"GraphicTwister.com is a website with completly free and premium mockups and designs. All mockups on this site are free to use for both commercial and personal projects. You cannot redistribute our PSD designs. If you want to share, please link to original download page (not file). You are not allowed to sell any of our graphic"