- Letter:
AllA(25)B(29)C(17)D(9)E(10)F(39)G(41)H(11)I(8)J(8)K(6)L(9)M(17)N(11)O(4)P(33)Q(6)R(9)S(18)More
- Operating System:
AllWindows 95(6)Windows 98(6)Windows Me(6)Windows XP(8)Windows Vista(8)Windows 7(8)Windows 8(8)Windows 10(8)Windows 2000(8)Windows Server 2003(8)Windows Server 2008(8)Windows Server 2012(8)Windows Server 2016(8)Mac OS Classic(6)macOS(8)Linux(8)Android(8)iOS(8)