The 11.15 version of RiceCNC for Mac was available to download on the developer's website when we last checked. We cannot confirm if there is a free download of this app available. The actual developer of this free software for Mac is Robert Carl Rice. According to the results of the Google Safe Browsing check, the developer's site is safe. Despite this, we recommend checking the downloaded files with any free antivirus software.
From the developer:
RiceCNC is an integrated hardware/software system for controlling Computer Numeric Control (CNC) milling machines using stepper motors for axes positioning. Several motor controller interfaces are supported, including industry standard step/direction, discrete, quadrature and now ST Microelectronics "dSpin" SPI.