Viabundus is an open access online interactive map and database on roads and mobility in premodern northern and central Europe. The database covers the period 1350–1650. It is designed as a network model and includes digital reconstructions of long-distance land routes and inland waterways as well as a database with information about settlements, towns, toll stations, staple markets, fairs, bridges, ferries, harbours and shipping locks. This makes it possible to use the dataset for advanced analyses with methods of gis and network analysis. With the web application and downloadable dataset, the Viabundus project has created a tool for the analysis of premodern mobility for economic (transaction costs) and all other kinds of historical study involving movement of people and goods.

The slavenregisters or slave registers of Suriname offer a unique perspective on the social and demographic history of a people in bondage. Thanks to a citizen science project, the archival sources were transcribed in 2017 by hundreds of volunteers. The transcriptions were used to create a longitudinal database of more than 90,000 enslaved persons. This paper describes the sources, data entry, and cleaning to create a standardized database as well as the matching needed to construct life courses. We discuss the best practices we have learned along the way. Finally, it offers prospects for research and expansion of the database to other population sources and areas.