ReactOS http://www.reactos.org/ USER-CENTRIC IMPROVEMENTS -ext2 read/write and NTFS read support -New explorer shell and theme support -SerialATA support -Sound support -USB support -VirtualBox and VirtualPC support -Wireless networking DEVELOPER-CENTRIC IMPROVEMENTS -CMake support for GCC and MSVC compilation -Compilation times significantly improved -GDB remote debugging interface for kernel debugging -WinDBG support