Kirstin Kemner-Heek works as Head of Local Library Systems Department in the Head Office of the Common Library Network GBV (VZG) in Göttingen, Germany. Since 1999 Kirstin has worked as a systems librarian in maintaining the acquisition and OPAC software for the GBV. After studying for a MA LIS in Cologne (2009-2011), Kirstin first got in contact with the Open Library Environment (OLE, https://www.openlibraryenvironment.org/) and therefore with open source software for library management. After becoming Head of the Local Library Systems Department in 2013 a project together with another German library network – North-Rhine Westfaphlian Library Service Centre (hbz) – was started to evaluate the OLE software. Both networks became active development partners in the OLE community. In 2016, the OLE community became a stakeholder in the FOLIO project (https://folio.org). VZG and hbz are active members and support the software development with funding, functional expertise and developers. Our goal is the development of an open source library management system, that supports the needs of the network libraries today, and through its platform and app-based architecture, investigate the possibility of new services to libraries in the future.