Tartiflette yes, aligot yes, truffade yes. Raclette and Fondue no, only ones l have seen are in the tourist rat's warren near St Michel and the two l tried were dreadful, walk out dreadful. l have brought my own cave-aged gruyere and made them myself.
Pain Vin Fromage on the rue Geoffroy l'Angevin just behind the Pompidou in the 4th ... Most other fondue/ raclette restos are usually pretty low-end tourist/ cheap studenty so careful when wandering about ... There might be other good ones but Pain Vin Fromage is a sure bet.