- Letter:
AllA(33)B(28)C(32)D(18)E(12)F(25)G(18)H(22)I(16)J(7)K(11)L(17)M(32)N(22)P(22)Q(4)R(16)S(36)T(27)More
- Operating System:
AllWindows 95(3)Windows 98(3)Windows Me(3)Windows XP(4)Windows Vista(4)Windows 7(4)Windows 8(4)Windows 10(4)Windows 2000(4)Windows Server 2003(4)Windows Server 2008(4)Windows Server 2012(4)Windows Server 2016(4)Mac OS Classic(3)macOS(4)Linux(4)Android(4)iOS(4)