18 May 2017. ReactOS is an open source operating system which strives to be binary compatible with Microsoft Windows and features the ability to run many Windows applications.
The project has released ReactOS 0.4.5 which features several improvements to the system’s graphics, including better application and font rendering. The ReactOS team has also reported their operating system can run Microsoft Office 2010 and several stability improvements have been added to this release: “The ReactOS Project is pleased to release version 0.4.5 as a continuation of its three month cadence. Beyond the usual range of bug fixes and syncs with external dependencies, a fair amount of effort has gone into the graphical subsystem. Thanks to the work of Katayama Hirofumi and Mark Jansen, ReactOS now better serves requests for fonts and font metrics, leading to an improved rendering of applications and a more pleasant user experience.“
Download in two different flavors:
Consider it more useful to permit linking proprietary applications with the library. If this is what you want to do, use the GNU Lesser General Public License instead of this license.
ReactOS may be used, runtime linked, and distributed with non-free software (meaning that such software has no obbligations to open-source, or render free, their non-free code) such as commercial device drivers and commercial applications. This exception does not alter any other responsibilities of the license under the GPL (meaning that such software must still obey the GPL for the free (“open-sourced”) code that has been integrated into the said software).
The kernel design is based on that of Microsoft Windows 2003 Server. It implements kernel mode Asynchronous Procedure Calls (APCs), Deferred Procedure Calls (DPCs), processes, threading, mutexes, semaphores, spinlocks, timing code, and more.