MATE Calculator is described as 'The official calculator for the MATE desktop environment. It has been designed to be used with either the mouse or the keyboard. It is visually similar to a lot of hand-held calculators' and is a Calculator in the education & reference category. There are more than 25 alternatives to MATE Calculator for a variety of platforms, including Windows, Android, Mac, Web-based and iPhone apps. The best MATE Calculator alternative is SpeedCrunch, which is both free and Open Source. Other great apps like MATE Calculator are Qalculate!, OpenCalc, Numbat and Numi.