CASIO 1.0 for Mac was available to download from the developer's website when we last checked. We cannot confirm if there is a free download of this app available. This free software for Mac OS X was originally produced by Ferland Francois.
The following version: 1.0 is the most frequently downloaded one by the program users. 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:
This project provides a simple Mac OS X driver for a USB MIDI interface found on Casio keyboards. This is entirely based on the Sample USBMIDI Driver provided by Apple with the CoreAudio SDK. To install the driver, simply double-click on the package. It will install for all users on your machine.
You may want to check out more Mac applications, such as CASIO DataManager6, Fx702p or Exif Cleaner, which might be similar to CASIO.