- Letter:
AllA(12)B(10)C(12)D(15)E(5)F(12)G(6)H(8)I(6)J(6)K(14)L(6)M(11)N(53)O(5)P(40)Q(7)R(6)S(13)More
- Operating System:
AllWindows 95(5)Windows 98(5)Windows Me(5)Windows XP(7)Windows Vista(7)Windows 7(7)Windows 8(7)Windows 10(7)Windows 2000(7)Windows Server 2003(7)Windows Server 2008(7)Windows Server 2012(7)Windows Server 2016(7)Mac OS Classic(5)macOS(7)Linux(7)Android(7)iOS(7)