GraphicRiver - ThemeForest Preview Photoshop Generator Pack

Mixkit: Known for its user-friendly interface, Mixkit provides a vast collection of free video assets, including motion graphics and video templates. While they aren't directly from Videohive, they offer a comparable quality that can be integrated into your projects seamlessly.
Videezy: Videezy offers a variety of free and paid video assets, including After Effects templates. Their extensive library is perfect for those looking to enhance their videos without breaking the bank.
Motion Elements: While Motion Elements primarily focuses on premium content, they regularly feature free downloads that include video templates similar to those found on Videohive. Their search interface allows you to filter out the free options easily.
Editor’s Depot: This site provides free editing tools and templates, ensuring you have access to some elements similar to Videohive offerings. Though the selection might not be as vast, it’s a valuable resource for cost-effective production.
Motion Array: With a solid reputation, Motion Array occasionally offers free downloads that replicate some Videohive elements. Subscribing to their newsletter might help you get alerts about any new freebies available.

GraphicRiver - ThemeForest Preview Photoshop Generator Pack
Layered Photoshop PSD | Pixel 590x300 | 53 MB

http://graphicriver.net/item/themeforest-preview-generator-pack/3759650

The ThemeForest Preview Generator Pack will enable you to quickly and efficiently create an item preview for your ThemeForest layouts.

The pack consists of:

iPhones, iPads, Macs and Macbook
Smart-layers for screenshots to change all device screenshots throughout the file at once
Smart-layers to control the primary and secondary colours within the entire PSD
14 highly professional pre-made examples
9 additional pre-made device positions
13 additional background designs, some of which incorporate the smart-layers
Additional resources such as responsive icons, 12 star ratings in various colours, 11 tick box/bullet point designs, 22 list/tick combination designs, logos and marks from platforms such as Wordpress, Magento, HTML5 and CSS3
Initial full sized mockups, more than adequate for other similar digital projects