The Greenstone Digital Library Software provides a way to build and distribute digital library collections by organizing information and making it available online or offline. It was developed by the New Zealand Digital Library Project at the University of Waikato in cooperation with UNESCO and the Human Info NGO to empower users like libraries and universities to create their own digital collections. Greenstone allows users to gather documents, enrich them with metadata, design the collection interface, build the collection using Greenstone, and then preview and share the collection.