DEVISE – Product Portfolio PowerPoint
https://elements.envato.com/devise-product-portfolio-powerpoint-2M26KCG
Free 
PRONTO – Photography Portfolio PowerPoint
https://elements.envato.com/pronto-photography-portfolio-powerpoint-DZJGDVF
Free 
PROTON Z – Photography Portfolio PowerPoint
https://elements.envato.com/proton-z-photography-portfolio-powerpoint-TD5SM37
Free 
Abstract Technology Timelapse
https://elements.envato.com/abstract-technology-timelapse-L6XVMKG
Free
Abstract Technology Electronic
https://elements.envato.com/abstract-technology-electronic-ULER2GJ
Free