- 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(3)Windows 98(3)Windows Me(3)Windows XP(3)Windows Vista(3)Windows 7(3)Windows 8(3)Windows 10(3)Windows 2000(3)Windows Server 2003(3)Windows Server 2008(3)Windows Server 2012(3)Windows Server 2016(3)Mac OS Classic(3)macOS(3)Linux(3)Android(3)iOS(3)