I have compiled a complete list of glaciers and parks open in the European Alps this summer.. I indicate when there is no park on this glacier during the summer. Unless indicated otherwise, there is a park present.
Les 2 Alpes, France - open from June 14th
Tignes, France - open from June 21st
Val d'Isère, France - open from June 28th !!no park!!
Zermatt, Switzerland - always open 365/365, park from end of June / early July
Saas-Fee, Switzerland - open from July 7th
Stubai, Austria - open !!no park!!
Hintertux, Austria - always open 365/365
Kitzsteinhorn, Austria - open from June 21st !!no park!!
Mölltal, Austria - open from June 21st !!no park!!
Dachstein, Austria - open
Val Senales (Schnalstal), Italy - open from June 14th
Stilfserjoch, Italy - open
Presena, Italy - open !!no park!!
Cervinia, Italy - connects to Zermatt from June 21st
link to google maps: http://maps.google.com/maps/ms?hl=de&ie=UTF8&oe=UTF8&msa=0&msid=103405160290356370935.00044f7ae927689ef0b9b&ll=46.460566,9.525146&spn=3.82947,13.205566&t=p&z=7
glaciers closed for summer skiing: Val Thorens, Alpe d'Huez, La Plagne, Les Diablerets / Glacier 3000, Verbier, Engelberg, Laax, St. Moritz, Kaunertal, Sölden, Pitztal, ..