CalorieKing - Offers a free database of the caloric content, fat content, and other important dietary information about all sorts of food, ranging from restaurant delicacies to packaged entrees.

FatSecret -  Record your food and exercise, keep a lifetime record of your weight, find buddies to support you, and more.

FitDay - Free weight loss and diet journal. Track and analyze your nutrition, weight loss, diet and fitness over the web.

Lose It! - A calorie counter and weight tracker, with tools for logging food intake.

MyCalorieCounter - An online diet and exercise journal that allows you to track your nutrient intake and find the calories you burn during exercise.

MyFitnessPal - Free online calorie counter and diet plan. Lose weight by tracking your caloric intake quickly and easily.

NutriDiary - Free online food and exercise diary.

NutriMirror - Track and analyze your diet and exercise activity; create personalized meal plans and recipes.

ShapeLink -  Get your own free exercise log to keep better track of your progress and stay motivated. Challenge your friends, create goals and share your workouts with others.

SparkPeople - Track diet, nutrition and fitness and offer large support communities where you can network among other dieters and get support to reach your weight loss goals.

TheDailyPlate - MyPlate's calorie counter allows you to set your weight loss goals, track your daily caloric intake and log your fitness activities.

Traineo - Calculate precise weight loss data including historical trends, daily net energy (calories) goals, and more.

WebMD Food & Fitness Planner -  An online food and exercise journal.