wger - FLOSS workout, fitness and weight manager/tracker written with Django
Chamath Abs Calculator - Calculate how long will you take to get SixPAC ab'ed
Strong.app - Strenght training logger.
Wakeout - A new way to wake up—with workouts you do in your pajamas
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.
Ewolo - A simple, flexible mobile-friendly workout logger & tracker