Similar to Behance, Dribbble is a community of designers. Using the search filter "Freebies" along with "PSD" will yield incredible UI kits, app designs, and website headers created by professionals looking to give back to the community.
Launch Adobe Photoshop and open the target template document. template free psd
Free PSDs are available for nearly every design need, helping creators save time and maintain professional standards: Web & UI Design Similar to Behance, Dribbble is a community of designers