Although EIF-services is not and will never be a web agency, it is worth mentioning a non-profit hobby project developed here: it is 100% front-end (HTML/CSS/JavaScript) and allows one to manage a website for publishing gpx tracks. Thus as mentioned elsewhere, EIF-services is "web aware" although not a pure web player.

The project is called gpxCatalog and is documented on GitHub; it currently weighs some 600 (non empty) lines. You can see it running at GPX:cyclo|Brest.