ReactOS
Clone of Windows
Free operating system built to run Windows programs and drivers, with a desktop, taskbar and control panels like Windows XP.

Image: ReactOS
What works the same as Windows
- A desktop with My Computer, My Documents and Recycle Bin, and a taskbar with a Start button.
- Runs programs and drivers made for Windows NT, 2000, XP and Server 2003.
- Aims at Windows Server 2003 compatibility, with an eye on Vista and later.
What is missing
- It is alpha software: some things may not work and it can corrupt the data on your disk.
How to get started
- Click Download. It opens the project download page.
- Run it in a virtual machine or on a computer with no important data. Do not replace Windows with it.
- Download the ISO or the live image and start the machine from it.
Compatible files
Windows files (.exe) According to the project