We are a dynamic community of professionals working in the arts, humanities, social, and natural sciences. We collaborate to design, develop, and share software that we use every day. CollectionSpace is a free, open source platform to support the description, management, and dissemination of collections information. It is comprised of a suite of modules and services that support critical functions such as acquisition, movements, loans, and physical identification, and that serves as a flexible core of information from which virtual collections, federated searches, interpretive materials and experiences may be developed. It is freely distributed under the ECLv2 license.