If you want to perform a reinstall or clean install of Windows 11 on a new or used PC, use this option to download the media creation tool to make a bootable USB or DVD.

Download the Windows ISO to create installation media (USB drive, DVD), create a virtual machine, or simply mount the disk image to install Windows 11 on your PC.

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Download Ubuntu desktop, Ubuntu Server, Ubuntu for Raspberry Pi and IoT devices, Ubuntu Core and all the Ubuntu flavors. Ubuntu is an open-source software platform that runs everywhere from the PC …

Download operating system for your personal computer.

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Dec 18, 2025 · Use any of these methods to download and install current or previous versions of the Mac operating system on compatible Mac computers. Each macOS includes the latest built-in apps …

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Jan 21, 2026 · Browse free open source Operating Systems and projects below. Use the toggles on the left to filter open source Operating Systems by OS, license, language, programming language, and …