NUT is nutrition software to record what you eat and analyze your
meals for nutrient composition.  Besides the usual features of
nutrition software, NUT includes a novel automatic portion control
feature that allows you to plan nutritious meals when experimenting
with different calorie levels, different levels of protein,
carbohydate, and fat, and different food exclusions.  NUT also
offers a well-organized presentation of the nutrients that can help
you learn human nutrition by simply playing with the software.

Homepage:
https://nut.sourceforge.net/
