Laravel - A PHP Framework For Web Artisans
MyFitnessPal - Track the number of calories that you consume each day with MyFitnessPal. The app also lets you create a diet and track the exercise that you complete each day whether it's walking, running or some other type of program.
Fat-Free - PHP micro-framework designed to help you build dynamic and robust Web applications - fast
Fitbod - Personalized Strength-Training powered by Machine Learning
Slim Framework - Slim is a PHP micro framework that helps you quickly write simple yet powerful web applications and APIs.
Fitocracy - Fitocracy is a social network that turns exercise into a cooperative and competitive exercise with friends, rivals, and strangers.