Automatic Annotation Tools
Alchemy commercial entiry extraction service which links entities to DBpedia, Freebase, US Census, GeoNames, UMBEL, OpenCyc, YAGO, MusicBrainz, CIA Factbook, and CrunchBase. See Alchemy API Linked Data. OpenCalais entiry extraction service which links entities to DBpedia, Wikipedia, Freebase, Reuters, GeoNames, Shopping, IMDB, and LinkedMDB. Zemanta commercial service for the annotation of blog posts. The topic of automatically annotating documents with DBpedia URIs has been discussed February 2010 on the LOD mailing list.
Manual Annoation Tools
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