Burning bootable USB drives, SD cards etc

A short note because I can never remember the name of the contending tools for this task. TBH we do not truly need a specialised app for this; on POSIX systems, there is the dd command which will happily make bootable drives, but sometimes it is nice to have a couple of bonus features, such as making drives that you can write additional files to.

• rufus (Windows) is a boot drive maker which is free and open source and maintained and thus possibly less suspect than some competitors.
• balenaEtcher
• UNetbootin still seems to work but is somewhat suspect and gives warnings if you use it for e.g. Debian.
• popsicle: Multiple USB File Flasher is, I think, Linux only and seems to be simple.