Custom mapping - Geocoding http://www.gpsvisualizer.com Description: Free tool that allows you to feed addresses and generate latitude/longitude coordinates.
Tableau reshaper tool http://www.tableausoftware.com/files/Tableau_Data_Tool.zip Description: Download includes the application and instructions for use. This is a handy excel plugin that allows automated “reshaping” of data. This is helpful to get a data source into a Tableau-friendly format.