wokamoto

This is a plugin creating a new tweet including a URL of new post on your wordpress.
You can use specific tweet phrases by post authors. 
And You can also tweet short URL of your domain if you introduce the plugin <a href="https://wordpress.org/extend/plugins/short-link-maker/" title="Short link maker" rel="ugc">Short link maker</a>.
PHP5 Required.
<h4>Localization</h4>
<ul>
<li>English (en) – <a href="http://www.odysseygate.com/" title="Odysseygate.com" rel="nofollow ugc">odyssey</a></li>
<li>Japanese (ja) – <a href="http://dogmap.jp/" title="wokamoto" rel="nofollow ugc">wokamoto</a> (plugin author)</li>
<li>Belorussian (be_BY) – <a href="http://pc.de/" title="PC.DE" rel="nofollow ugc">Patricia</a></li>
<li>Dutch (nl_NL) – <a href="http://wpwebshop.com/blog" title="WPWebshop Blog" rel="nofollow ugc">Rene</a></li>
<li>German (de_DE) – <a href="http://www.creditriskmanager.com/" title="Credit Risk Manager" rel="nofollow ugc">Rian Klijn</a></li>
</ul>
If you have translated into your language, please let me know.
<h3>Licence</h3>
Released under the <a href="http://www.gnu.org/copyleft/gpl.html" rel="nofollow ugc">GPL license</a>.

Simple Tweet

This is a plugin creating a new tweet including a URL of new post on your wordpress.

Gerald Yeo

Notice: I’ve have since stopped development of this plugin as I feel that the state of URL Shortening services seems to have converged and there isn’t much more progress I have in the pipeline for this plugin.
<a href="http://wiki.fusedthought.com/docs/url-shortener-wordpress-plugin" title="URL Shortener" rel="nofollow ugc">URL Shortener</a> allows you to generate shortlinks for post/pages using URL Shorteners (e.g. Bit.ly, Su.pr and many others), with a few additional features.
Please check your settings when upgrading to Version 4.0 from previous versions prior to it.
What’s New with 4.0
<ul>
<li>QR Code Support (using Google Chart API)</li>
<li>Additional Shorteners (Goo.gl, dlvr.it, yourls) </li>
<li>Nice ID links with QR Code (i.e. http://your_site/123.qr)</li>
<li>Version 4.0 features completely refactored code once again. Now includes classes which allows developers to easily extend the plugin.</li>
</ul>
Features:
<ul>
<li>Automatic generation of a Short URL/Shortlinks</li>
<li>Cached Shortlink – thus generated only once. </li>
<li>Choose to generate shortlinks using permalinks or the posts ID (e.g. http://your_site/index.php?p=123).</li>
<li>Relatively extensive shortlink support</li>
<li>Action Hooks available for other plugins to utilize generated shortlinks (From Ver 3.0 Onwards)</li>
<li>Nice ID links – http://your_site/123 instead of http://your_site/index.php?p=123</li>
<li>Shortcode support (Ver 3.1): Place [shortlink] in your article where you want to display the shortened url.</li>
<li>Append a link to short URL below your post content (Ver 3.1.1)</li>
</ul>
Refer to the documentation/wiki page at http://wiki.fusedthought.com/docs/url-shortener-wordpress-plugin for more information (eg. installation guide and known issues etc).
Services currently supported are:
<ul>
<li>goo.gl (beta)</li>
<li>bit.ly</li>
<li>tinyurl</li>
<li>is.gd</li>
<li>Su.pr</li>
<li>snipurl / Snurl / Snipr / Sn.im / Cl.lk</li>
<li>cl.gs</li>
<li>chilp.it</li>
<li>smsh (aka sm00sh)</li>
<li>urli.nl</li>
<li>unfake.it </li>
<li>awe.sm</li>
<li>Voizle </li>
<li>Interdose API</li>
<li>dlvr.it</li>
</ul>
Suspended
<ul>
<li>Ping.fm (Will be suspended until they reopen their API)</li>
</ul>
Available Template Tags
On-demand shortening function:
<pre><code><?php fts_shorturl('http://www.google.com', 'bitly'); ?>
</code></pre>
To show the generated links::
<pre><code><?php fts_show_shorturl($post); ?>
</code></pre>
Or if WordPress 3.0:
<pre><code><?php the_shortlink(); ?>
</code></pre>
https://codex.wordpress.org/Function_Reference/the_shortlink
Available hooks and filters
<ul>
<li>fts_use_shortlink (Action Hook)</li>
<li>fts_filter_shortlink (Filter)</li>
</ul>
Future Versions and on:
<ul>
<li>More services/features can be added upon request (http://code.google.com/p/url-shortener-plugin/issues/list)</li>
<li>Do note that due to my increasing need to concentrate on my studies, and a lack of financial contribution from such plugin development, I cannot possibly accede to all requests. </li>
</ul>
Support via:
<ul>
<li>https://wordpress.org/tags/url-shortener</li>
<li>Contact me via my website ( http://www.fusedthought.com/contact/ )</li>
<li>Please check the FAQ</li>
</ul>

URL Shortener

This plugin allows you to generate shortlinks for post/pages using URL Shorteners (e.g. Bit.ly, Su.pr, YOURLS, Goo.gl and many others).

Simple Tweet vs URL Shortener