简介：ReactOS 项目致力于为大家开发一个免费而且完全兼容 Microsoft Windows XP 的操作系统。ReactOS 旨在通过使用类似构架和提供完整公共接口实现与 NT 以及 XP 操作系统二进制下的应用程序和驱动设备的完全兼容。

简单地说，ReactOS 目标就是用您的硬件设备去运行您的应用程序。最后，诞生一个任何人多可以免费使用的 FOSS 操作系统！！
ReactOS is an open source effort to create a Windows NT 4/2000/XP+ compatible operating system licensed under the GNU public license. In partnership with the WINE project, ReactOS also supports drivers which work under Microsoft Windows.

Latest Changes:
Freeldr was improved
HAL's key areas have been significantly improved (irql-related, bus support, kd-functions)
The Kernel experienced a massive rewrite of incompatible parts (and is still in the process of improvement)
Run-time library (Rtl) got a lot of improvements and bug fixes
Bugs were fixed in kernel-mode drivers and a better USB driver was added
Registry-support has been greatly improved thanks to addition of "cmlib", a library shared by the boot loader and the kernel to handle binary registry hives; it even supports binary registry hives created by Windows
More fixes in the Win32 subsystem and user-mode DLLs
Boot video driver (and a splash screen) was added  本文转自俺要下载 www.ayxz.com