matthewbe

Simple Language Switcher is a simple and lightweight plugin that allows you to display a language switcher on your site.
<h4>Features</h4>
<ul>
<li>You can easily customize the display of your language switcher (language ISO codes, language names or flags).</li>
<li>Interconnect your post in different languages (avoids the user to be redirected to the home page when switching to another language).</li>
<li>Current language detection with regex: avoids displaying a link to the same page in the same language.</li>
<li>Generates rel=”alternate” hreflang=”x” links for SEO purposes.</li>
</ul>
You will find full details, instructions and a demo here: http://www.mendoweb.be/blog/wordpress-plugin-simple-language-switcher/
<h4>Before you downvote this plugin</h4>
<ul>
<li>Understand that this is not an attempt at making a plugin for a complete multilingual solution; you will find better plugins out there for this.</li>
<li>It didn’t work for you? You found a bug? Give me a description with some details in the support forum, and I will fix it as soon as I can.</li>
<li>For some reason, you didn’t like it? Share me your suggestions in the support forum, and perhaps I will work on it.</li>
</ul>
<h4>Support</h4>
Did you enjoy this plugin? Please take a moment to rate and comment, this will keep me motivated to update this plugin for bugfixes and WordPress upgrades.

Simple Language Switcher

A simple and lightweight plugin that displays a customizable language switcher.

Benoti

A well known tools dedicated to admin posts.
Switch from the original post-type to another post-type.
Duplicate post, page or any post-type object.
The Post-type switcher is an evolution from the Post-type Switcher of John James Jacoby
General options:
<ol>
<li>Enable of the tools independently of each other.</li>
<li>On demand plugin options deletion.</li>
</ol>
Switcher & Duplicate options:
Post type Switcher:
<ul>
<li>Quick edit switcher</li>
<li>Bulk switcher</li>
<li>Post edit screen switcher</li>
<li>enable switch for post type in settings panel</li>
</ul>
Duplicate:
<ul>
<li>Quick edit link</li>
<li>Post edit link</li>
<li>new post title with old ID</li>
<li>enable or disable taxonomy copy</li>
<li>enable or disable custom fields copy</li>
<li>works with any post-type</li>
</ul>

Brozzme Switch and Duplicate

It's easier to get these tools embed in one plugin

Make the job

A set of tools dedicated to post type, Post-type Switcher and Post Duplicate (works with any custom post-type).

Simple Language Switcher vs Brozzme Switch and Duplicate