Calorie Counters and Diet Software

MyFoodDiary TOP PICK
A comprehensive and superior diet tracker with a very clean and usable interface. Many people like the concept of "the Fridge" which holds foods that are frequently eaten. This allows your daily food to be logged very easily.

All physical activity can be logged, along with all body measurements. Comprehensive reporting includes an excellent "At a glance" feature that immediately highlights any nutritional issues. Membership also includes a private discussion forum.

Costs: Subscription-based (~$2 per week)

FitDay
A popular free online tracker. Does the job, but lacks much of the usability goodness of some of the subscription trackers.

Lacks members forums

NutriDiary
Offers basic free membership, plus paid memberships with extra features.

A good set of features, but lacks the clean usability of MyFoodDiary.