https://gpxplanner.app/
cost
Trial/£25 subscription
default map
OpenStreetMap
maps available
OpenStreetMap (some other options on payment)
map download
N/A
adverts
No
Reasonable speed. Mainly intended to create/edit GPX files, though even the trail version can upload them. Can split/join and display many routes. Most options are for editing. An outstandingly clear interface, would be good in an app, remarkable for a website. You may prefer a standalone computer application for this kind of work, but as a browser‐based application, outstanding.
website
cost
Free
default map
Mapbox
maps available
Mapbox, OpenStreetMap
map download
N/A
adverts
No
Slow. Mainly intended to create/edit GPX files. Most options are for editing. Interface has very small buttons, which are either tidy or annoying, could be said also of the large, not removable elevation display. Good enough to use as a supplement to a general web‐map application.
There are some apps for desktops. Mostly, they are editors. For our purposes, viewing, you need to stay away from full map editors like ARCGIS and QGIS, because they are overloaded and unusable. Still, as a suggestion,
website
cost
Free
default map
OpenStreetMap
maps available
OpenStreetMap
map download
Yes
adverts
No
This is one of those tweaky Open Source programs, but it’s a Java program and should run out of the box on any (ok, most) computer systems. As a desktop program downloading through a domestic internet connection it’s very fast, even with online OpenStreetMaps. Uses an excellent version of OpenStreetMap with buildings and cased roads. No jump to location and tracking, because that’s not the aim. But every other facility you could think of, and some you may not, such as swivelling 3D maps (only basic with this site’s GPX files, as they do not include elevation information). Menu‐centred interface is, compared to phone apps, much easier to use. A demonstration of how compromised the phone apps are… but the only reason to try in our case is to show a GPX line, so probably not enough to replace a visit to one of the big web apps.