hwde

There are a couple of “post notifier” plugins available, but I wasn’t able to 
found a similar than this one.
The plugin does a very simple thing: each time a post is created, updated or 
deleted, a URL defined in settings of this plugin is “called” by the plugin.

CallOnPost

"Call On Post" is a Post Notifier as a plugin which will "fetch" automatic the specified URL when a post is published or modified by a user.

carlosfazenda

The Fast Page & Post Duplicator plugin lets you make a copy of any post or page in WordPress with one click.
It makes a copy of the original content so you can use the same layouts, formatting and structure again without having to start from scratch.
This plugin is simple and fast. It makes managing content easier.
It is great for:
<ul>
<li>Using the same page layouts</li>
<li>Making versions of landing pages</li>
<li>Copying posts to update or translate them</li>
<li>Making copies of templates quickly</li>
</ul>
<h3>Features</h3>
✔ Duplicate posts with one click 
✔ Duplicate pages with one click 
✔ It copies the content, title and settings 
✔ Keeps the structure and formatting as the original post 
✔ Fast and simple 
✔ With a simple interface in the WordPress post list
New things in recent versions:
✔ See what you have cloned recently 
✔ View statistics on who is cloning what 
✔ Check history of all the clones you have made
<h3>How it works</h3>
<ol>
<li>Install and activate the Fast Page & Post Duplicator plugin.</li>
<li>Go to Posts → All Posts or Pages → All Pages.</li>
<li>Move your mouse over any item in the list.</li>
<li>Click Clone.</li>
<li>The copied content will open as a draft. You can edit and publish it.</li>
</ol>
<h3>Why use Fast Page & Post Duplicator?</h3>
Making pages from scratch can take a time.
With the Fast Page & Post Duplicator plugin you can make a copy of existing content. Change it which saves you time and makes sure your site looks consistent.
The Fast Page & Post Duplicator plugin works with the WordPress admin interface and does not need any special setup.

Fast Page & Post Duplicator

Make a copy of posts and pages with just one click.

CallOnPost vs Fast Page & Post Duplicator