ConvertTabToXml will convert a tab-delimited file saved from an Excel report that our PMO office runs into a project list suitable to open or, more often, use as a merge list. Figure 1 shows the GUI version of the program, which is what you get if you provide no arguments.
Figure 1. This is the GUI version of ConvertTabToXml.
As indicated in the GUI display, you can provide the -i and -o arguments and the program will perform the translation without the GUI.