UNetbootin is described as 'Cross-platform utility to create bootable USB drives or Live USBs, with a built-in downloader for Linux ISO images and rescue disks' and is a leading bootable usb creator in the os & utilities category. There are more than 50 alternatives to UNetbootin for a variety of platforms, including Windows, Linux, Mac, Flathub and Flatpak apps. The best UNetbootin alternative is Rufus, which is both free and Open Source. Other great apps like UNetbootin are balenaEtcher, Ventoy, YUMI exFAT and dd.
WinUSB - simple, portable and lightweight tool, lets you create multiple Windows bootable USB flash drive using ISOs or DVDs. Formatting drive is not required when free space is enough. Boot with NTFS flash drive in UEFI system supported for most PC.
SharpBoot is a small utility for creating multiboot ISO or USB. You just need to drag-n-drop some iso files inside, and it automatically adds description and category (for supported ISO files, not shown in the screenshot). It uses Syslinux for the menu and bootloader.
Startup Disk Creator (usb-creator) is an official tool to create Live USBs of Ubuntu from the Live CD or from an ISO image. The tool is included by default in all releases after Ubuntu 8.04.
TekDT USB Creator is an automatic Windows installation USB/Hard drive creation free software. Help you install Windows for your computer as quickly, simply and as easily as possible.
Linux Mint's USB Image Writer (mintstick) is an easy to use and dependable means of creating bootable USBs.
Automatically make a live bootable usb with ease with AutoBootDisk, a open-source program
EasyBoot makes creating a bootable CD or bootable DVD a straightforward process. Whether you want to make a MultiBoot CD that starts up in your language or you need bootable CDs with the company logo, EasyBoot meets your requirements.
Deepin Boot Maker is a boot maker developed by Deepin Technology Team. It is simple in interface and easy to operate. It helps users to easily make deepin boot disk.
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Commonly available on Ubuntu, simple and easy to use.