- Letter:
AllA(13)B(7)C(16)D(5)F(11)G(5)H(9)I(4)K(11)L(7)M(8)N(16)O(2)P(115)S(10)U(2)W(7)X(4)Y(19)More
- Operating System:
AllWindows XP(16)Windows Vista(16)Windows 7(16)Windows 8(16)Windows 10(16)Windows 2000(16)Windows Server 2003(16)Windows Server 2008(16)Windows Server 2012(16)Windows Server 2016(16)Mac OS Classic(16)macOS(16)Linux(16)iOS(16)