jonkemp

Improves your blog’s search engine optimization by “noindexing” pages you choose.
Add the <code>noindex</code> robots meta tag to archives, categories, search pages, tags, author pages, login, admin pages or any other page you choose.
Add the <code>rel="nofollow"</code> attribute to individual pages listed by the <code>wp_list_pages</code> function or the Pages widget. Also, add the <code>rel="nofollow"</code> attribute to archive links, category links, registration and login links.
Changelog
*1.1.2 
**Bug fixes. 
*1.1.1 
**Bug fix where if user did not set nofollow pages, pages links would not display. 
*1.1 
**Added support for nofollowing login and registration links. Also, optimized some of the code. 
* 1.0 
**Added support for nofollowing individual pages in <code>wp_list_pages</code> function. 
* 0.5

Ultimate Noindex Nofollow Tool

Improves your blog's search engine optimization by "noindexing" pages you choose.

Denis de Bernardy

Mike Koepke

The external links plugin for WordPress lets you process outgoing links differently from internal links.
<h4>Usage</h4>
Under Settings / External Links, you can configure the plugin to:
<ul>
<li>Process all outgoing links, rather than only those within your entries’ content and text widgets.</li>
<li>Add an external link icon to outgoing links. You can use a class=”no_icon” attribute on links to override this.</li>
<li>Add rel=nofollow to the links. (Note: You can use a rel=”follow” attribute on links to override this.)</li>
<li>Open outgoing links in new windows. Note that this can damage your visitor’s trust towards your site in that they can think your site used a pop-under.</li>
<li>Turn on “autolinks” functionality.</li>
<li>Domains/subdomains you wish to Exclude from processing.</li>
</ul>
<h4>Auto Links</h4>
The Autolink functionality automatically converts urls to hyperlinked urls in post/page content, excerpts and text widgets.
Before:
<blockquote>
www.semiologic.com
</blockquote>
After:
<blockquote>
<a href="http://www.semiologic.com" rel="nofollow ugc">www.semiologic.com</a>
</blockquote>
<h4>Help Me!</h4>
The <a href="https://wordpress.org/support/plugin/sem-external-links" rel="ugc">Plugin’s Forum</a> is the best place to report issues.

External Links

Perfect

The external links plugin for WordPress lets you process outgoing links differently from internal links.

Ultimate Noindex Nofollow Tool vs External Links