Marketing manager Bernd Staudt said the companies had been collaborating for a number of years, initially with HP's Z-series Designjet range.
He claimed the software, which would be demonstrated in HP's showrooms, was the only Gold level partner in colour management for the presses.
The company added that the software could be used to achieve colour parity with ISO Coated v2 offset print on both wide- and large-format printers using an automated process.
Chief executive Paul Willems said the software enabled printers "to offer print products with an identical colour appearance, regardless of which printing process, press and substrate used".
He added: "The HP Gold partner status clearly demonstrates the high-quality standards the GMG brand stands for and will certainly help to enhance the visibility of our joint solutions".