Developed as early as 1999 using Open Source software, the EROS database manages information related to artworks that have been studied and restored at the Centre de recherche et de restauration des musées de France, C2RMF. With the development of Web 2, some new functionalities have been integrated: new fields, a module for preventive conservation, a database ‘analysis’ as well as a module for ‘samples’ for managing samples taken from artworks. The implementation of a new search engine enables retrieval of an artwork while looking in one or more fields of several databases (advanced search mode) or in free text in all the fields of all databases (simple search). In addition, the development of new ‘viewers’ operating on 16 bit images enables display and superimposition of multispectral images for examining their difference by opacity variation. These new tools are used for research and conservation of artworks.