Cultural Survival is an organization that works worldwide with indigenous communities to help defend their lands, languages and customs. Their website includes features of some of their work such as projects like “Celebrating Native American Language Revitalization in Film” as well as publications and opportunities to participate in some of their partnership activities with indigenous peoples.
Revitalization of indigenous languages is a big part of what Cultural Survival does. They help create small community-based radio stations that broadcast in local languages and also help aggregate language-based resources for indigenous communities.
This website does not have extensive academic articles, although these may be available by subscribing to their publications. I think it has some value for anyone looking for examples of language and cultural revitalization to support their research into these areas.