Last month, the third major version of an operating system was launched. This version added the ability to connect to a network. The operating system, whose name is ReactOS, has been trying for 10 years to become the first Windows-like OS that's also free. ReactOS wants to become binary-compatible with Microsoft Windows applications and drivers.
Although it's still in alpha, the operating system runs many applications (mostly using Wine), including Notepad, Firefox, Opera, mIRC, AbiWord, Explorer-like file manager, and even games like Quake or Unreal Tournament.
The GUI is similar to the one from Windows 2000 and you can use something similar to Windows command-line.
The OS is more like a proof-of-concept now, but you can try it for yourself to see how good it is. I plan to burn a LiveCD to test it, as it's not a good idea to install an alpha operating system.