Up till recently, the arabic inscriptions from the whole Islamic world, from the beginning of islam until 800 h., were collected in the famous Répertoire Chronologique d'Épigraphie Arabe (RCEA), edited by the Institut Français d'Archéologie Orientale in Cairo. Eighteen volumes have been published collecting more than 7000 inscriptions, all in arabic. The development of new technologies gives new possibilities for describing inscriptions, and especially for a rapid recovery of words, dates etc. between thousands and thousands of inscriptions. That is the reason why the concept of the old project was updated and a new project, called Thesaurus d'Épigraphie Islamique, was developed and is described in this article. The goal is now to collect not only inscriptions in arabic but also in persian and turkish, up till the year 1000 h. By looking at this new system adapted to the possibilities given by computer, one can appreciate the rich and varied aspects of Islamic epigraphy in the Middle Ages.

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