windows 6 In 2012 and 2013, Microsoft released versions of Windows specially designed to run on ARM -based tablets; these versions of Windows, named "Windows RT" and "Windows RT 8.1," were based on Windows 8 and Windows 8.1, respectively..
windows-8.1
Windows 6 was a quick fix of Windows Vista's problems and a bridge between Windows 7 and Windows Vista, released in 2008. It had fewer features, lower system requirements and shorter support than Windows Vista and Windows 7.
windows-6
Comprehensive list of Microsoft Windows versions, offering insights on every release with help identifying your version and understanding system compatibility.