- Letter:
AllA(5)C(5)D(12)E(4)F(3)H(3)I(25)J(4)L(2)M(4)N(5)P(3)R(5)S(25)T(23)W(6)X(4)Y(11)Digital(3)More
- Operating System:
AllWindows 95(3)Windows 98(3)Windows Me(3)Windows XP(5)Windows Vista(5)Windows 7(5)Windows 8(5)Windows 10(5)Windows 2000(5)Windows Server 2003(5)Windows Server 2008(5)Windows Server 2012(5)Windows Server 2016(5)Mac OS Classic(3)macOS(5)Linux(5)Android(4)iOS(5)