Bartosz Romanowski

This plugin provides a simple [tag] shortcode.
Replacing patterns:
[tag]tag name[/tag]
<a href=”http://yourdomain.com/tag/tag-name/” title=”tag name”>tag name</a>
[tag slug=”tag-name”]your text[/tag]
<a href=”http://yourdomain.com/tag/tag-name/” title=”tag name”>your text</a>
[tag name=”tag name”]your text[/tag]
<a href=”http://yourdomain.com/tag/tag-name/” title=”tag name”>your text</a>

Simple Tag Shortcode

This plugin provides a simple [tag] shortcode.

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

Simple Tag Shortcode vs Tagbag