NDSA Levels of Preservation, http://www.digitalpreservation.gov/ndsa/activities/levels.html
Plato Preservation Planning Tool, http://www.ifs.tuwien.ac.at/dp/plato/intro.html
Digital POWRR, http://www.digitalpowrr.niu.edu
DSpace, http://dspace.org/
Fedora Commons, http://www.fedora-commons.org/
DuraSpace, http://www.duraspace.org
Islandora, http://www.islandora.ca
Archivematica, https://ww.archivematica.org/en/
BitCurator, http://www.bitcurator.net/
MetaArchive, http://www.metaarchive.org/
Chronopolis, http://libraries.ucsd.edu/chronopolis/
Academic Preservation Trust (APTrust), http://aptrust.org/
Digital Preservation Network (DPN), http://www.dpn.org/
Preservation and Archiving Special Interest Group (PASIG), http://www.asis.org/Pasig/
ALA – ALCTS – PARS – Digital Preservation Interest Group, http://www.ala.org/alcts/mgrps/pars
Association for Information Science and Technology (ASIS&T), http://www.asis.org/
Society for Imaging Science and Technology (IS&T) – Archiving, http://www.imaging.org/ist/index.cfm
Digital Preservation Coalition, http://www.dpconline.org/
National Digital Stewardship Alliance (NDSA), http://www.digitalpreservation.gov/ndsa/
Digital Curation Centre (DCC), http://www.dcc.ac.uk/
Digital Curation Exchange, http://digitalcurationexchange.org
American Library Association Digital Preservation Discussion List, http://lists.ala.org/wws/info/digipres
JISC DIGITAL-PRESERVATION Email List, https://www.jiscmail.ac.uk/cgi-bin/webadmin?A0=DIGITAL-PRESERVATION
Digital Curation Google Group, https://groups.google.com/forum/#!forum/digital-curation