The Paris Time Machine consortium is working on building geo-historical reference data. It is made up of several working groups including that of addresses and directories which aims to collect, list, use and visualize the addresses of Parisian directories.

The DatArt project brings together initiatives whose aim is to decentralize the study of the art world from Paris to the regions. Even if the capital was a major artistic center at the national and international level, other cities constituted a cultural breeding ground, both in the market structures and in the actions set up by local artists.