The Mulce3 Project aims at developing a server that would allow researchers to share Learning and Teaching Corpora (Letec). Our main goals are: first, to facilitate the work of researchers in the CSCL field by reusing existing corpora instead of creating new experiments, collecting and organizing data, and secondly, to connect these corpora to shared analyses and visualization tools. We also hope that this process of sharing would deepen and widen the validity of research tools and analyses.