As of Version 10, all the functionality of the GraphUtilities package is built into the Wolfram System.
GraphUtilities contains a number of functions that are useful for graph theory applications. A native implementation of this functionality has been added to the Wolfram System. While there is some overlap in naming, the native Wolfram System implementation is fundamentally different in many ways.
A graph in GraphUtilities is specified by a rule list {vi1->vj1,…}. In the Wolfram System, Graph[{vi1->vj1,…}] yields a graph object with edges vi1->vj,…. This graph object displays in a notebook as a plot of the graph and can be manipulated via functions. See the Graphs & Networks guide for an overview of the Wolfram System functionality.
Version 8.0
The complete list of GraphUtilities functions and the corresponding equivalent functions in the Wolfram System are shown below.