"This new tool allows an easy and comfortable way to download genuine Windows 7, 8.1 and 10, as well as Office 20017 and 2010 disk images (ISO) directly from Microsoft's servers." (ib., 2017-06-19)
See also http://www.portablefreeware.com/?id=2253
"netboot.xyz uses iPXE to boot multiple Operating System installers or utilities over the network from a single menu"
(also downloads the various tools, e.g. AVG, AntiVir, Kaspersky, F-Secure, ...)
2.5” USB3.0 External HDD Case with virtual CD-Rom support for ISO images;
equal to IODD 2531: http://iodd.kr/wordpress/product/iodd-2531/
Previously available at www.tux.org/pub/people/kent-robotti/looplinux/rip/, defunct since 2016, cf http://wayback.archive.org/*/http://www.tux.org/pub/people/kent-robotti/looplinux/rip/
"create bootable Live USB drives for Ubuntu and other Linux distributions without burning a CD"