gpx.studio - View, create, edit and combine GPX files online to correct your activity data or design new awesome routes.
digiKam - Professional Photo Management with the Power of Open Source
GPX Editor - Load, modify and save your GPX 1.1 files.
XnView MP - XnView is a free software that allows you to view, resize and edit your images. It supports more than 500 different formats!
GPS Track Editor - GPS Track Editor: Free Windows Application to Make GPS Tracks Better.
FastStone Image Viewer - FastStone Image Viewer is a fast, stable, user-friendly image browser, converter and editor.