New version of this operating system alternative to Windows, you can DOWNLOAD here, the main changes are:

• A complete rewrite of the Cm (Config Manager) in ntoskrnl – aka registry support. This makes it much more compatible with NT5.2 (win2k3).
• SSE / SSE2 support.
• New Plug and Play keyboard and mouse driver.
• Full syncing of all usermode dlls from the most recent Wine release.
• Support for RPC and IDL (which was quite outdated and buggy) was finally brought up to date, providing a solution for the plug-n-play manager problems, ReactOS Services and promising future support for complex apps such as Microsoft Office.
• Huge improvements to user32 which now uses the desktop heap, greatly speeding up the UI.
• Large compatibility fixes to gdi32, meaning our dll can now be loaded and used directly in Windows.
• Continuation of the rewrite of Win32k incorporating rewrites of a core functionality to bring it in line with win2k3.
• Improvements of many core user mode components, a much more functional shell32, improved control panel applets and the addition of a remote desktop client.
• A great deal of work on translations, language and regional settings.