Already Existing Tags
Looks for already existing tags within your posts.
Plugin Tag: auto tagging
WP Auto Tagging
WP Auto Tagging Wordpress Plugin Will Automatically Generate & Add Tags to Wordpress Posts.
DX-auto-tags
自动搜索自定义的标签列表，如果文章内容包含该文本，则自动添加文章标签.
TagBot
This plugin automatically tags posts with keyphrases extracted from the content of the posts using…