gpx.studio - View, create, edit and combine GPX files online to correct your activity data or design new awesome routes.
JEFIT - Jefit is the #1 popular gym workout app for Android and iOS. Jefit allows you to manage your training routine and keep track of your workout progress easily.
GPX Editor - Load, modify and save your GPX 1.1 files.
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.
GPS Track Editor - GPS Track Editor: Free Windows Application to Make GPS Tracks Better.
Runtastic - Runtastic offers a series of fitness apps that can be used to track your running, walking, hiking, and cycling, as well as many other fitness routines. Read more about Runtastic.