1. National Digital Information Infrastructure and Preservation Program: http://www.digitalpreservation.gov/ndiipp/
2. CEDARS: CURL Exemplars in Digital Archives, http://www. leeds.ac.uk/cedars/
3. CAMiLEON: http://www.si.umich.edu/CAMILEON/
4. PANDORA: http://pandora.nla.gov.au/
5. Networked European Deposits Library (NEDLIB): http://www. kb.nl/coop/nedlib/