The LUT conversion capabilities of LightSpace CMS are available as an affordable standalone option. This software allows you to import practically any LUT format and convert to practically any other format, including FSI formats.
This software is not intended for calibration LUT creation and does not feature the display profiling options found in the full version of LightSpace. More information on converting LUTs and loading them to an FSI display with a CFE2 or CFE3 board can be found in the user manual available here: http://www.flandersscientific.com/index/uploads/FSIUserManual.pdf
as well the video below.
Please note this is a Windows based application, but it will run well in Parallels or other Windows virtualization software on a Mac.