- Letter:
AllA(26)B(29)C(14)D(11)E(5)F(36)G(43)H(9)I(7)J(4)K(10)L(12)M(34)N(13)O(3)P(37)Q(2)R(9)S(15)More
- Operating System:
AllWindows 95(9)Windows 98(9)Windows Me(9)Windows XP(9)Windows Vista(9)Windows 7(9)Windows 8(9)Windows 10(9)Windows 2000(9)Windows Server 2003(9)Windows Server 2008(9)Windows Server 2012(9)Windows Server 2016(9)Mac OS Classic(9)macOS(9)Linux(9)Android(9)iOS(9)