Whiler

It can be used to avoid browsers cache by inserting a random number. 
For instance, http://my_url?[random-number]” could generate http://my_url?134548.
[random-number from=”2″ to=”72″ format=”%b”]%d minutes[/random-number]
output: an integer value between 2 & 72 followed by the word ‘minutes’
This plugin is a sample on how to create a plugin which: 
* supports internationalization, 
* provides an option screen, 
* saves some options, 
* use images, 
* replaces a tag.
By the way, it generates randomized numbers ;o)
If you need more functionalities, feel free to ask (email/blog)…
A post with a French tutorial is available <a href="http://blogs.wittwer.fr/whiler/2009/11/23/exemple-complet-extension-wordpress/" rel="nofollow ugc">here</a>.
<h3>Supported languages</h3>
<ul>
<li>English</li>
<li>French</li>
<li>Russian (Thanks to <a href="http://www.shinephp.com/" rel="nofollow ugc">Vladimir / ShinePHP.com</a>)</li>
</ul>

Random Number Generator

Simply replace the tag [random-number] by a random number.

GRAQ

If you are writing something that spans multiple posts (e.g. Guide, FAQ, Product Review), and you want 
to group these posts together. You can still use your usual categories and tags.
The article name is prefixed to the post title and a small ‘mini menu’ is added at the end, or beginning, of the post.

Articalise

For grouping posts together that are all part of one article.

Random Number Generator vs Articalise