LedMatrixSPI is an Arduino library for controlling multiple MAX7219 and MAX7221 Led display drivers in a matrix style layout. It does not support 7-segment displays.
https://github.com/agr00m/LedMatrixSPI/wiki Also included in the library folder.
https://github.com/agr00m/LedMatrixSPI
The library can be installed using the standard Arduino library install procedure