InTouch Technology - InTouch Technology's member lifecycle management solutions are built exclusively for the health & fitness industry.
wger - FLOSS workout, fitness and weight manager/tracker written with Django
Gymbag - Get your online store to start selling fitness products directly to your clients
Strongify - Strongify is the easiest workout tracker app. Enter the number of reps and the weight you lifted in just a few taps. Create any exercise that you want and track your progress over time.
AthleteTrax - AthleteTrax has developed a sports facility management software, making daily tasks easier at your ice rink, multi sport facility or recreational league.
Strong.app - Strenght training logger.