Top Alternatives to Etcher

Rufus is a utility that helps format and create bootable USB flash drives.

Bootable live USB creator for Ubuntu, Fedora, and Linux distributions.

YUMI (Your Universal Multiboot Installer), is the successor to our MultibootISOs. It can be used to create a Multiboot Bootable USB Flash Drive.

Universal USB Installer aka UUI is a Live Linux Bootable USB Creator.

LinuxLive USB Creator is a free Microsoft Windows program that creates Live USB systems from installed images of supported Linux distributions.

ApplePi-Baker is a free MacOS X application for Raspberry Pi user, for flashing SD-Cards (IMG) or prepare NOOBS SD-Cards.

WinToFlash is a useful tool that can help you create a bootable Windows setup USB drive from a CD or DVD.

Win32 Disk Imager is a windows tool for writing images to USB sticks or SD/CF cards.

SARDU multiboot creator build one All in One USB media thumb drive or DVD.

WinSetupFromUSB is a Windows program, which prepares multiboot USB flash or fixed disk to install any Windows versions.

MultiSystem creates a MultiBoot USB from Linux.

BartPE (Barts Preinstalled Environment) was a lightweight variant of the 32-bit version of Microsoft Windows XP or Windows Server 2003, similar to Windows Preinstallation Environment, which could be run from a Live CD or Live USB drive.

XBoot is yet another neat little Multiboot ISO USB Creator.

MultiBootUSB is a cross platform software written in python which allows you to install multiple live Linux on a USB disk non destructively.

dd is a command-line utility.