*ios , apple kits https://developer.apple.com/design/resources/ *Google Material https://material.io/archive/guidelines/resources/sticker-sheets-icons.html# *Microsoft windows https://docs.microsoft.com/en-us/windows/uwp/design/downloads/ *wireframes https://www.behance.net/gallery/55462459/Wires-wireframe-kits-for-Adobe-XD