This plugin automatically adds user-defined tags to posts.
TagGator Automatically tag to your posts so you dont have to! Tag your posts based on their contents automatically.
AlchemyTagger analyzes your writing as you blog, suggesting useful tags
to describe and categorize your posts.
The plugin performs semantic analysis of your post text and suggests tags for you using Open Calais.
Goes through your archives and adds tags to your posts based on semantic analysis.
Fast and efficient post tagging using multiple tag suggestion APIs, plus mass tag suggestions and editor.
RefTagger turns Bible references into links to the verse on Bible.logos.com and adds tooltips with the text of the verse.
The plugin performs an analysis of your post text and suggests tags for you.
RSS link for this tag.