An earlier tablet computer that ran the Windows 8 operating system. In addition to vendors such as HP, Dell and Samsung, Microsoft also makes Windows tablets (see Surface tablet). Windows 8 Vs. Windows RT There were two kinds of Windows 8 tablets. A "true" Windows 8 tablet ran all the applications that run on a Windows XP, Vista, Windows 7 or 8 computer, whereas a Windows RT tablet ran apps only written for RT. Windows RT tablets came with Microsoft Office at no extra charge, but Windows 8 tablets did not. Starting with Windows 10, Microsoft dropped support for the RT version of the tablet. See Windows RT, tablet PC and tablet computer.