User Guide Starting OpenMatrix Installers can be found on the OpenMatrix website and include pre-compiled versions of the current OpenMatrix release. Using OpenMatrix with Atom Atom is a powerful text editor that supports customization and external packages. Plotting with OpenMatrix OpenMatrix is a console-mode application and does not include any plotting capabilities. Creating Toolboxes for OpenMatrix Additional toolboxes can be written in the C/C++ language and interfaced with OML.