Argyll Color Management System 1.9.2 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. The actual developer of this Mac application is Graeme Gill. The program lies within System Tools, more precisely Device Assistants. We recommend checking the downloaded files with any free antivirus.
From the developer:
Argyll is an ICC compatible color management system. It supports accurate ICC profile creation for scanners, cameras and film recorders, and calibration and profiling of displays and RGB & CMYK printers. It also includes code for the fastest portable 8 bit raster color conversion engine available anywhere, as well as support for fast, fully accurate 16 bit conversion.
You may want to check out more software for Mac, such as Folder Color, NFS Manager or Fiery Color Profiler Suite, which might be related to Argyll Color Management System.
Converters
Device Assistants