Software
The following are some useful software packages.
OpenStereo - Not a statistical package pre say but has does a lot of structural data reduction and can do Rose Diagrams.
ProUCL - From EPA - Originally for calculating upper confidence limits but does several test.
Scout - From EPA - Scout was last update in 2008 although it is worth checking out being it does SEVERAL test.
Visual Sample Plan - From EPA - As the name implies this program is mainly for selecting number and locations of sampling points.
The following are some usefull packages