ReactOS is a free and open-source operating system designed to mimic Microsoft Windows. It is capable of running numerous Windows applications without requiring any modifications. Although the project has experienced a recent slowdown, it is important to note that it is still actively functioning.
The most recent version of ReactOS is 0.4.14, which was released in December 2021. Previously, developers aimed to release updates every three months, but this approach has changed. The focus now resides on delivering updates of higher quality instead of mere quantity. The ReactOS team ensures that any release has fewer than 20 regressions, does not significantly impact stability, and incorporates new features to build confidence in its reliability.
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The progress on the x64 port of ReactOS has been commendable. Previously, it was in a non-booting state; however, the team has now successfully developed an operating system that not only boots up but also functions reasonably well. It is important to note that it currently lacks the capability to run x86 programs due to the absence of WoW64. Despite this limitation, the project is continuing to make strides. Application compatibility remains largely restricted to the Windows XP and Windows 7 eras, rendering most contemporary software incompatible.
The team may not have a new major release to announce, but the latest newsletter/blog post is filled with the most recent advancements and enhancements in the operating system. If you're interested in reading all of it, please refer to the source link below.
If you're eager to test out any of the changes, you'll need to be patient. The nightly builds are available, but they are highly experimental. However, since this software is not recommended for everyday use, it's advisable to wait for stable builds if you prefer to avoid dealing with an unstable system.
Source: ReactOS