Joan Boluda

unitepress

This plugin removes/unsets the post_tags taxonomy from the admin panel in case you (or your client) are not using them.

Remove tags taxonomy

This plugin removes/unsets the post_tags taxonomy from the admin panel in case you (or your client) are not using them.

Birchdunford

Tags, tagging, and post tags made easy. Stop thinking about what tags you should add, forgetting to add certain tags, and typing in tags by hand. Let Tagbag do the work for you. Just look at the list of suggestions, click the ones you want, and move on. More on Tagbag: 
<a href="http://www.explodybits.com/2012/04/tagbag-wordpress-plugin/" title="explodybits (xb)" rel="nofollow ugc">explodybits (xb)</a>

Tagbag

Tagbag, takes the thought out of selecting tags for your post

Remove tags taxonomy vs Tagbag