The MRtrix3 software package includes a suite of tools for image analysis and visualisation. With the exception of :ref:`mrview` and :ref:`shview`, all MRtrix3 executables are designed to be run via a terminal using a consistent :ref:`command-line interface <command-line-interface>`. While many of the tools and features are discussed within tutorials found in this documentation, a comprehensive :ref:`list-of-mrtrix3-commands` and :ref:`list-of-mrtrix3-scripts` can be found in the reference section. These lists provide links to the help page (manual) for each executable, which can also be accessed by typing the -help option after the executable name on the terminal.