Fink, KarinOrtner, VéroniqueDao, HyRichard, Jean-PhilippeVogel, FrédéricMinier, PhilippeSusini, Alberto2019-09-162019-09-162004https://dl.gi.de/handle/20.500.12116/27226This paper presents the envirocat project, the Swiss Catalogue of Environmental Data. Envirocat deals with different aspects of sharing: federal and cantonal institutions share information about environmental data with other institutions and the public in a system accessible to all. Sharing is also significant when it comes to providing the contents of the catalogue: many different partners share the workload of updating. Recently several different initiatives concerning metadata and centralized databases have been launched at different levels (national and cantonal) in Switzerland. Sharing therefore implies connecting these initiatives and coordinating the collection of metadata. Envirocat has been developed entirely with open source technology, making it possible for others to share the experience gained through envirocat and to take part in the future development of the application. This paper focuses on different aspects that are equally important for a successful envirocat catalogue: the institutional mandate, environmental data concepts, open source technologies and the data provider community.Text/Conference Paper