INVELITY

This plugin allows you to post a preview of any post for anonymous users before publishing it. Have you ever written a post with the help of someone who does not have access to your blog and needed to be able to view the article to comment on it before publishing it and do not want to have access to your blog’s administration? This add-on takes care of this by generating a URL.

Super Public Post Preview

Create and share link to anonymous users for preview any post before it is published.

Nagmay

Let anonymous users preview a post before it is published!
Have you ever been writing a post that needs to be reviewed by someone who does not have access to log in? This plugin generates a simple URL that can be given out for public preview.
Based on Public Post Preview 1.3 by Matt Martz and Jonathan Dingman. Unlike Public Post Preview, the Simple Preview can be accessed by more then one user. The 24hr time limit has also been removed.
<h3>Upgrading</h3>
<ol>
<li>Click update from the WordPress plugin menu.</li>
</ol>
or
<ol>
<li>
Click ‘Download’ on this page.
</li>
<li>
Deactivate the simple preview plugin through the Plugins menu in WordPress Admin.
</li>
<li>
Upload the folder to your /wp-content/plugins directory, overwriting the previous version.
</li>
</ol>

Simple Preview

Let anonymous users preview a post before it is published!

Super Public Post Preview vs Simple Preview