ELUNA was formed for North American Ex Libris customers in 2006 to combine NAAUG (North American Aleph Users’ Group) and SMUG (SFX MetaLib Users’ Group). After the merger of Ex Libris and Endeavor in 2007, ELUNA also incorporated the North American customers of Endeavor’s user group, EndUser, while international Endeavor customers joined IGeLU, the International Group of Ex Libris Users.