Just because I downloaded a program to write ISOs to a USB drive, does not mean it needs to be installed on the system. Unless it's something like MS Office, why does it need to be installed? Just give me a zip file, I will extract it and delete it when I don't need it anymore.
Yeah, who needs an installer when you can just ./configure, then ./make and ./make install, just stopping to fetch and build missing dependencies occasionally, upgrade some others, then retry.
If you’re on Windows and looking for a portable ISO burner, Rufus works great and is a 1.4mb portable .exe for that. It works great for when I overwrite Windows with Linux.
my directory of 'portable' programs has about sixty different things in it. some of which are used daily and are either in the path or are windows' default for something.