MrXHellboy

<p>Give your visitors the option to mail the article they are reading</p>
<h3>Development Blog</h3>
<p><a href="http://online-source.net/category/open-source/scripts-wordpress-plugins/" title="Online-Source WordPress plugins" rel="nofollow ugc">Online-Source WordPress plugins</a></p>


Mail this for wordpress

Give your visitors the option to mail the article they are reading

GRAQ

<p>If you are writing something that spans multiple posts (e.g. Guide, FAQ, Product Review), and you want<br />
to group these posts together. You can still use your usual categories and tags.</p>
<p>The article name is prefixed to the post title and a small ‘mini menu’ is added at the end, or beginning, of the post.</p>


Articalise

For grouping posts together that are all part of one article.

Mail this for wordpress vs Articalise