- Letter:
AllA(27)B(9)C(18)D(23)E(8)F(21)G(6)H(7)I(7)J(3)K(10)L(11)M(278)N(16)O(8)P(34)R(10)S(17)T(17)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)