Mark Jaquith

Michael Adams (mdawaffe)

Other preview plugins don’t know what sort of changes WordPress will make to a 
visitor’s comment, but this plugin uses AJAX and other buzzwords to send each 
previewed comment through WordPress’ inner voodoo.
The result? With the click of a button, your site’s visitors can preview their 
comments exactly as they will appear when they submit them for realies.
Requires PHP5.

Ajax Comment Preview

Visitors to your site can preview their comments with a click of a button.

Dougal Campbell

By default, the only way to see how a new theme looks on your site is to 
activate it, making it visible to everyone who visits. With this plugin, it 
is possible to view how a new theme looks without activating it.
<h3>TODO</h3>
Possible future enhancements:
<ul>
<li>Add an options screen.</li>
<li>Allow choice of theme to preview from a known list of installed themes.</li>
<li>Provide persistent previews by setting a cookie.</li>
<li>Restrict preview ability by user Roles/Capabilities.</li>
<li>Child-theme friendliness.</li>
</ul>
<h3>Notes</h3>
May not work properly with child themes. This is because it will not be able 
to inherit from the parent theme as it normally would.

Theme Preview

Allows you test how a theme looks on your site without activating it.

Ajax Comment Preview vs Theme Preview