Simmer (formerly Foodie) - Yelp, but for every dish on the menu
Nomie - Open-source mood and life tracking
Spoon University - Food network for next generation.
Eevie - Eevie app is a digital guide that enables you to make changes into your daily living style so you can form new habits and can also learn about the impact of your current habits of the environment.
NYT Cooking - iPhone app with 17,000 free recipes from The New York Times
Habit Rabbit - Habit Rabbit app allows users to create life goals so they can track their goals and get things done by using small habits.