MOM-CA is a collaborative database system which allows for the research and editing of medieval and early modern charters. By and large you can find the charters organized according to archival “fonds”; charters that originate from different sources are subsumed under “Collections”. Most of the charters have images; many of them also have descriptions and to a smaller extend even transcriptions, depending on what kind of information material the archivists and researchers have already been able to provide. By way of the search facility you can search for descriptions of charters as well as their transcriptions. You can find a basic introduction into MOM-CA at the github-wiki of the project and in our screencast tutorials at The image tools are described at