John Godley

Provides advanced permalink options that allow you to:
<ul>
<li>Have multiple permalink structures. Permalinks can be assigned to posts or ranges of posts</li>
<li>301 redirect old permalink structures (many structures are allowed)</li>
<li>Category-specific permalinks. Posts in certain categories can be assigned a permalink structure</li>
<li>No need to have a base to the category permalink!</li>
<li>Change author permalinks</li>
<li>Enable periods in permalinks – perfect for migrating old websites</li>
</ul>
All permalinks are real permalinks and do not result in 301 redirections. This means you can change your permalink structure without 
affecting any existing posts and without losing any page rank. Any attempts to access posts in the wrong permalink structure will be 
automatically redirected to the correct URL.
Advanced Permalinks is available in: 
* English 
* Bulgarian (thanks to Alexander Dichev) 
* Belorussian (thanks to Marcis Gasuns) 
* Russian (thanks to Slava Mikheev) 
* Uzbekistan (thanks to Alexandra Bolshova) 
* Lithuanian (thanks to Nata Strazda at Web Hub)
<h4>Example 1: Migrating a permalink structure</h4>
Say you have an existing site with the default WordPress permalink structure <code>/%year%/%monthnum%/%day%/%postname%/</code> and you decide you want to change it 
to a more keyword-heavy <code>/%category%/%postname%/</code>. If you change the permalink setting then all your old posts will be moved, and you will suffer a major loss 
of page rank (not to mention a lot of 404s). With Advanced Permalinks you can define a specific permalink structure for all your old 
posts and then create a new permalink structure for new ones. All your old posts will carry on living at the same URL as before, but all 
new posts will be created using your new structure.
<h4>Example 2: Category-specific permalinks</h4>
Sometimes you want posts in a certain category to appear elsewhere on your site. For example, your usual permalink structure may result in:
/2007/05/02/my-review
However, you want posts in the ‘review’ category to appear as:
/reviews/my-review
Using Advanced Permalinks this is not a problem.
<h3>Documentation</h3>
Full documentation can be found on the <a href="http://urbangiraffe.com/plugins/advanced-permalinks/" rel="nofollow ugc">Advanced Permalinks Page</a> page.

Advanced Permalinks

Allows multiple permalink structures and category-specific permalinks without needing redirects.

antonioandra.de

WP htaccess Control should now really be called WP htaccess and Rewrite Control. It provides an interface to customize the htaccess file generated by WordPress but also its permalinks (author, category, archives, pagination and custom taxonomies). Have a look at the screenshot for a clearer idea of the available options.
Features:
<ul>
<li>Customizing the htaccess file generated by WordPress;</li>
<li>Removing any custom taxonomy’s slug base from permalinks;</li>
<li>Removing the category base from permalinks;</li>
<li>Removing the author base from permalinks;</li>
<li>Customizing the Author Permalink Base;</li>
<li>Customizing Paginated Permalinks (translate the “page” word on permalinks to your own language);</li>
<li>Customization (and canonization) of the Search Permalink Base;</li>
<li>Creation of Category, Author, Tag and Custom Taxonomy based archives (ex: “http://your-site.com/category/stories/2010/12”, “http://your-site.com/author/admin/2010/12/page/2” and “http://your-site.com/tag/wordpress/2010/12”), this will also work if you’ve removed the base slug;</li>
<li>Maintenance mode.</li>
</ul>
Easy to use “Suggested htaccess” rules:
<ul>
<li>Jim Morgan’s htaccess;</li>
<li>Disable directory browsing;</li>
<li>Disable and redirect image hotlinking;</li>
<li>Disable and redirect file hotlinking;</li>
<li>Force canonical url (WWW or non-WWW);</li>
<li>Limit maximum file upload size;</li>
<li>Protect wp-config.php file from access;</li>
<li>Protect .htaccess file from access;</li>
<li>Protect comments.php from spam bots coming from nowhere;</li>
<li>Set 500 error page;</li>
<li>Set 403 error page;</li>
<li>Use mod_gzip if available;</li>
<li>Use mod_deflate if available;</li>
<li>Set admin email on server generated error pages;</li>
<li>Disable ServerSignature on server generated error pages.</li>
</ul>
POT file is included, translations are welcome.
<h3>Known Issues</h3>
I still haven’t tested this under WordPress multisite, issues have however been reported.
<h3>Additional Credit</h3>
Removal of the category base is based on iDope’s WP No Category Base but extended so that it works with category archives (ie.: “http://example.com/my-category/2010/12”).
Search redirection is based on Mark Jaquith’s Nice Search but extended so that it works with custom search base (ie.: “http://example.com/search-base/search-term”).
<h3>Stable Versions</h3>
For WordPress versions above 3.9 use the plugin version 3.4.
For WordPress versions above 3.4 use the plugin version 3.3.
For WordPress versions prior to 3.4 use the plugin version 2.7.2.1.

WP htaccess Control

Interface to customize the permalinks (author, category, archives and pagination) and htaccess file generated by WordPress.

Advanced Permalinks vs WP htaccess Control