The ReactOS project is an open source operating system which attempts to be binary compatible with Microsoft Windows. The ReactOS project has released a new version, ReactOS 0.4.2. The new release improves compatibility with Windows applications via WINE and includes the ability to read and write with several Unix/Linux/BSD file systems, including ext, ReiserFS and UFS. "Beyond the usual updates to external dependencies such as Wine and UniATA, much work has gone into refining the experience of using ReactOS, especially with respect to the graphical shell and the file explorer. Perhaps the most user visible change however is the ability now to read from and write to several Unix file systems, namely ext family, ReiserFS, and UFS. Native built-in support for these file systems should make for considerably easier interoperability than the current out-of-box experience provided by Windows, and there is more to come in the future."