| Directory | Function |
| xstools | Directory that contains the master workspace file for all the other utilities. |
| xstoolslib | Library of classes and utilities used by all the command-line utilities. |
| xstest | Command-line utility for running board diagnostics. |
| xssetclk | Command-line utility for setting the board clock frequency. |
| xsload | Command-line utility for uploading/downloading bitstreams/data to/from a board. |
| xsport | Command-line utility for forcing bit values onto pins of the board. |
| gxstoolslib | Same as xstoolslib, except these are recompiled for the GUI utilities. |
| gxstest | GUI utility for running board diagnostics. |
| gxssetclk | GUI utility for setting the board clock frequency. |
| gxsload | GUI utility for uploading/downloading bitstreams/data to/from a board. |
| gxsport | GUI utility for forcing bit values onto pins of the board. |