Software was developed using visual basics for computing properties of developed composite materials from agro waste (sawdust and palm kernel shell). Visual Basic was used as a rapid application tool to compute the properties from previous experimental data and developed empirical models. The properties of the produced composite materials from agro waste estimated using the soft ware were hardness, yield strength, ultimate tensile strength, modulus of elasticity; modulus of rupture, internal bond strength, density, thickness swelling and water absorption .The values obtained from the software were found to compare favourably with the analytical values. The mean percentage error were determined to be 0.01% (hardness), 0.287% ( yield strength),0.003% (ultimate tensile strength), 0.00158% (modulus of elasticity), 0.2857% (modulus of rupture), 0% (internal bond strength), 00073%(density), 0.019% (thickness swelling) and 0.00768% (water absorption). These values were insignificant and below the maximum recommended error of 10%. The software performance was also found to be satisfactory, showed good predictability and user friendly.