Ventoy is the ultimate multi-boot USB drive creation tool, in my opinion. I also use PINN, a similar tool for my Raspberry Pi OS installs, but that's for installing multiple OS on the same disk drive.

I just want a USB drive with an ISO folder- drop .iso files and if you boot off the USB, you get a menu to choose one of the ISOs. Bonus if it does UEFI and BIOS. Ideally, it doesn't require Windows ...

I created a bootable USB stick using an Ubuntu 8.10 live CD and the (manual) instructions shown at this guide. This worked great. However, what I'd really like to do is create a multi-booting version ...

Universal USB Installer is a Live Linux USB Creator that allows you to choose from a selection of Linux Distributions to put on your USB Flash Drive. The Universal USB Installer is easy to use. Simply ...