As of Version 7.0, GeneralizedBarChart has been superseded by RectangleChart.
As of Version 7.0, PercentileBarChart has been superseded by BarChart.
As of Version 7.0, StackedBarChart has been renamed "Stacked" and become a property of BarChart.
In Version 6.0, CircularVertices has been superseded by CircularEmbedding.
GrayCode
(Obsolete Combinatorica Package Symbol) In Version 6.0, GrayCode has been superseded by GrayCodeSubsets.
In Version 6.0, NetworkFlowEdges has been superseded by NetworkFlow.
Polya
(Obsolete Combinatorica Package Symbol) In Version 6.0, Polya has been superseded by OrbitInventory.
As of version 6.0, NearestNeighbor has been superseded by Nearest[{{x_1, y_1}, {x_2, y_2}, ...} -> Automatic, {a, b}].
As of Version 7.0, FindDivisions has been added to the built-in Mathematica kernel.
ZeroQ
(Obsolete Developer Package Symbol) As of Version 6.0, ZeroQ has been superseded by PossibleZeroQ.