- Letter:
AllA(34)B(29)C(34)D(19)E(12)F(26)G(19)H(45)I(16)J(7)K(15)L(17)M(33)N(23)O(8)P(23)Q(9)R(17)S(37)More
- Operating System:
AllWindows 95(3)Windows 98(3)Windows Me(3)Windows XP(7)Windows Vista(7)Windows 7(7)Windows 8(7)Windows 10(7)Windows 2000(7)Windows Server 2003(7)Windows Server 2008(7)Windows Server 2012(7)Windows Server 2016(7)Mac OS Classic(7)macOS(7)Linux(7)Android(4)iOS(7)