- Letter:
AllA(5)B(17)C(172)D(3)F(11)G(20)H(9)I(4)J(12)K(13)L(11)M(8)N(3)O(2)P(13)Q(2)R(6)S(5)T(7)More
- Operating System:
AllWindows 95(101)Windows 98(101)Windows Me(101)Windows XP(101)Windows Vista(101)Windows 7(101)Windows 8(101)Windows 10(101)Windows 2000(101)Windows Server 2003(101)Windows Server 2008(101)Windows Server 2012(101)Windows Server 2016(101)Mac OS Classic(101)macOS(101)Linux(101)Android(101)iOS(101)