This a software package for performing spatial analysis on points.
The paper describing the software is here, and a paper using the software is here.
software (note that this is a jar file so you will need to be able to run java)
click on paj.jar
click on random data - and it will load 500 randomly spaced points (or paste in a set of x,y,z's from an excel)
click montecarlo which will compare your data set to 100 randomized points
click rank - wait and then (a bug!) resize the window to display the results. Your data will be the dashed line and the monte carlo data a red shade