J-CLUT is a free, open-source, Java based hald to LUT converter.
LUT means Look-Up-Table. There are a few types of LUT files (1D, 3D) but they all just store rgb values in the form of a table. Those values can then be accessed to grade footage in editing software. In all cases of LUT use, the LUT is the means to make up the difference between source and result.
The open source repository can be aquired on GitHub.
Currently under development:
There is currently a huld to LUT converter program for both windows and mac platfroms under developments.
Updates will follow soon.