Here is a list of links to potentially useful software.
Atomic visualisation software
VESTA - 3D visualization program for structural models. - Free for non-commercial use.
Data analysis
Digital micrograph - Gatan software for TEM data acquisition and analysis - Free basic version available (no EELS or EDX analysis).
DM scripts - Database of user written scripts for digital micrograph maintained by Dave Mitchell of the University of Wollongong, Australia.
HyperSpy - Python based multi-dimensional data-analysis specifically for EELS and EDX. - Open Source.
ImageJ - Java based image processing program with a large number of user written plugins available. - Open Source.