This poster reports a project that examines the adoption of system functions of an open source digital repository, DSpace. It also identifies the factors which have influenced the functions' adoption. The data were collected from DSpace user registry from September 2013 to March 2014. A total of 545 repositories in the registry contained system function customizations, representing 533 unique institutions from 95 countries. The preliminary findings indicate that 10 of the 32 available system functions are adopted by over 10% of its members; the majority of repositories are from academia; academic repositories also offer most system functions; and the U.S. and India each comprises over 10% of DSpace repositories that have DSpace system function customizations. Additionally, repositories from India utilize most system functions. About two-thirds of institutions are using DSpace as their institutional repositories and the two major (over 50%) content types are conference publications and technical reports.