[Discover] Content Manager | OpenCalais http://www.opencalais.com/about/contentManager
(webtools metadata tagging webservices) 
[Discover] Kfinder: Biomedical keyword suggester http://www.ogic.ca/projects/kfinder/ (metadata bioinformatics biomedical)
[Discover] RLG DigiNews October 15, 2004, Volume 8, Number 5 http://www.rlg.org/en/page.php?Page_ID=20462 (images standards article metadata)
[Discover] Archivists' Toolkit http://archiviststoolkit.org/ (software tools metadata opensource)
[Discover] VRA Core version 3 http://www.vraweb.org/vracore3.htm (resource metadata)
[Discover] Tagging best practices http://tagamac.com/2007/07/best_practices/ (reference tagging metadata osx)
[Discover] Metadata (AGLS) - webpublishing.agimo.gov.au http://webpublishing.agimo.gov.au/Metadata_(AGLS) (agimo ausgov standards metadata)
[Discover] Kfinder: Biomedical keyword suggester http://www.ogic.ca/projects/kfinder/ (metadata bioinformatics biomedical)
[Discover] RLG DigiNews October 15, 2004, Volume 8, Number 5 http://www.rlg.org/en/page.php?Page_ID=20462 (images standards article metadata)
[Discover] Archivists' Toolkit http://archiviststoolkit.org/ (software tools metadata opensource)
[Discover] VRA Core version 3 http://www.vraweb.org/vracore3.htm (resource metadata)
[Discover] Tagging best practices http://tagamac.com/2007/07/best_practices/ (reference tagging metadata osx)
[Discover] Metadata (AGLS) - webpublishing.agimo.gov.au http://webpublishing.agimo.gov.au/Metadata_(AGLS) (agimo ausgov standards metadata)