Graphics`ThreeScript` was available as an add-on package in previous versions of Mathematica and is now available on the web at library.wolfram.com/infocenter/MathSource/6769.
Miscellaneous`RealOnly` was available as an add-on package in previous versions of Mathematica and is now available on the web at ...
The functionality of FactorIntegerECM can be obtained using the enhanced Mathematica kernel function FactorInteger.
NumberTheory`Rationalize` was available as an add-on package in previous versions of Mathematica and is now available on the web at ...
NumericalMath`IntervalRoots` was available as an add-on package in previous versions of Mathematica and is now available on the web at ...
NumericalMath`PolynomialFit` was available as an add-on package in previous versions of Mathematica and is now available on the web at ...
NumericalMath`TrigFit` was available as an add-on package in previous versions of Mathematica and is now available on the web at ...
All of the functionality in Utilities`Benchmark` is now available through the newly created Benchmarking Package.
The functionality of FilterOptions is provided by the kernel function FilterRules.
Utilities`MemoryConserve` was available as an add-on package in previous versions of Mathematica and is now available on the web at ...