34 Tagging APIs: Zemanta, 43Things and Evernote

Our API directory now includes 34 tagging APIs. The newest is the Ontos API. The most popular, in terms of mashups, is the Zemanta API. We list 6 Zemanta mashups. Below you'll find some more stats from the directory, including the entire list of tagging APIs.

In terms of the technical details, REST and XML lead the way. There are 25 tagging REST APIs and 4 tagging SOAP APIs. Our directory lists 18 tagging XML APIs and 14 tagging JSON APIs.

The most common tags within tagging are 10 semantic tagging APIs, 7 social tagging APIs and 5 search tagging APIs.

On the mashup side, we list 14 tagging mashups. We named termCloud Search as mashup of the day in December 2008.

For reference, here is a list of all 34 tagging APIs.

  43 Places API: Social travel goals

  43Things API: Social goal setting

  Amplify API: Content analysis service

  Barbershop Tags API: Barbershop music sharing and user community service

  Derpibooru API: My Little Pony photo sharing service

  Evernote API: The global Platform for human memory

  Evri API: Recommendations and semantic search service

  GroupMe API: Social bookmarking

  Jinni API: Movie discovery and search service

  Joey Calca's Post to Facebook API: One-time Facebook Wall post application

  OCLC Virtual International Authority File API: Library authority file service

  Ontos API: Semantic data for content

  OpenDover API: Semantic tagging webservice

  Quora API: Question and answer site

  Qwips API: Social voice-tagging service

  Reflect API: Biology and chemical tagging service

  Saplo Text Analysis API: Text Analysis Tool

  Sapo Tags API: Tag search service

  Sem4Tags API: Semantic tagging interpretation service

  Steve In Action API: Museum social tagging project

  Tagalag API: Email tagging

  Tagatum API: Blog tags repository services

  TagFinder API: Tag extraction service

  Taggstar API: Photo enhancement application

  Taglets API: Tagging service

  tagthe.net API: Tag recommendation service

  TagTooga API: Tag based Internet directory

  Tagul API: Tag Cloud Creation Service

  Tagyu API: Tag recommendation service

  Topicalizer API: Document analysis service

  Trails.by API: Q&A social bookmarking tool

  UMBEL API: Semantic structure service

  Wikimeta API: Semantic tagging and content annotation service

  Zemanta API: Blog authoring extension services

Be sure to read the next Tagging article: Google Announces Improvements to Google Tag Manager Including New API