Since I build things to last... I'd pick something that hasn't changed much in popularity for a couple decades. If this has to be a web app, then plain C on th

Since I build things to last... I'd pick something that hasn't changed much in popularity for a couple decades. If this has to be a web app, then plain C on the server and plain unadorned javascript on the client, but only to the extent that actual code is required at all. If this doesn't have to be a web app, obviously ditch the javascript. It also performs well and has more build-time error checking than the typical stack.