- Letter:
AllA(16)B(29)C(11)D(6)E(7)F(41)G(19)H(9)I(5)J(2)K(5)L(6)M(50)N(13)O(3)P(32)Q(6)R(5)S(54)More
- Operating System:
AllWindows 95(19)Windows 98(19)Windows Me(19)Windows XP(19)Windows Vista(19)Windows 7(19)Windows 8(19)Windows 10(19)Windows 2000(19)Windows Server 2003(19)Windows Server 2008(19)Windows Server 2012(19)Windows Server 2016(19)Mac OS Classic(19)macOS(19)Linux(19)Android(19)iOS(19)