TracksHeatmap allows drawing all gpx files loaded from selected folder or files. Loaded tracks can be filtered by dates and/or tracks for visible map area. Download latest version from releases
Few different maps are available (ArcGIS, BingMap, OpenCycleMap, OpenStreet, Yandex, WikiMapia, UMP-pcPL)
Use tapiriik.com to export your tracks from Endomondo, Strava or many ones.
Single track animation, see Tools tab
