Abstract
In conjunction with the preparation of a critical edition in printed form of the complete works of D’Alembert, a group has been working for several years now to produce a digital edition of the correspondence of the famous French scholar and encyclopaedist based on the following principles: various means of consultation and search tools in the corpus, development of the many surviving manuscripts, renewal of the circulation within the corpus, the rich critical apparatus being formed and many other works by the author, and provision of useful and relevant research tools for the more specialized reader. This article describes the concrete results of the work and states the difficulties encountered, as well as the long-term prospects of development envisaged.