Raspberry Pi Imager is described as 'Use Raspberry Pi Imager for an easy way to install Raspberry Pi OS and other operating systems to an SD card ready to use with your Raspberry Pi' and is a bootable usb creator in the cd/dvd tools category. There are more than 10 alternatives to Raspberry Pi Imager for a variety of platforms, including Windows, Linux, Mac, Flathub and PortableApps.com apps. The best Raspberry Pi Imager alternative is Rufus, which is both free and Open Source. Other great apps like Raspberry Pi Imager are balenaEtcher, UNetbootin, YUMI exFAT and Universal USB Installer.