An NVDA add-on with some accessibility enhancements for the interface of Calibre eBook Management
Keystrokes can be customized in Preferences of NVDA > Input gestures when calibre are open. Also you can define in preferences the way NVDA reads the table headers in the library (rows and columns, columns only or none).
Take a look at the documentation of Calibre for know more Keyboard shortcuts.
Covered by the GNU General Public License. See the file COPYING.txt for more details.