Jacob Dunn

Custom Post Archives bridges the gap between creating Custom Post Types in WordPress 3, and actually displaying those posts. With this plugin, you have 
the option of displaying a completely seperate blog-like section for each post type, complete with all the features you expect to see with WordPress.
For each custom post type, if you click “active” and enter a slug-name, this plugin will let you display post-type specific:
<ul>
<li>Archives</li>
<li>Date archives</li>
<li>Author archives</li>
<li>Category archives</li>
<li>RSS Feeds</li>
</ul>
This plug-in also provides many additional features to fully integrate your custom post types, including:
<ul>
<li>Adds a menu option to the new menu section created in WordPress 3 (for themes that support it)</li>
<li>Combined archives (http://www.mysite.com/type1+type2/)</li>
<li>Option to add post types to default blog</li>
<li>Option to add post types to default RSS feed</li>
<li>Adds post type support to wp_get_archives function</li>
<li>Adds multiple global functions and filters for working with custom post types (see Functions and Filters or Plugin Help for details)</li>
<li>Automatically displays the associated post type on custom taxonomy archives</li>
<li>Extends upon the WordPress templating, allowing for flexibility by theme authors (see FAQ or Plugin Help for details)</li>
<li>Automatically flushes the rewrite cache after modifications are detected</li>
<li>Automatically adds a “blog-{post_type}” type class to the body of the created archives (for themes that implement body_class())</li>
</ul>
For help and support, help has been built into the plug-in page’s contextual help section; be sure to check <a href="https://wordpress.org/extend/plugins/custom-post-archives/faq/" rel="ugc">the FAQ</a> and the <a href="https://wordpress.org/tags/custom-post-archives?forum_id=10" rel="ugc">plug-in forums</a> if that doesn’t do it.
If there are any other features you’d like to see, I’m all ears. Feel free to <a href="mailto:requests.custompostarchives@gmail.com" rel="nofollow ugc">send a message</a>, or <a href="https://wordpress.org/tags/custom-post-archives?forum_id=10" rel="ugc">hit the forums</a>!
<h3>Functions and Filters</h3>
The following function and filters are created by this plug-in. For more detailed descriptions, check the Help section built into the settings page.
Functions
<pre><code>is_custom_archive({$post_type = false});

get_custom_archive_url($post_type);
get_custom_archive_label({$post_type = false});
get_custom_archive_link($post_type);
</code></pre>
The following functions are for advanced users. Each overrides the settings for the corresponding post_type in the plugin settings.
<pre><code>add_custom_archive($post_type,$slug,{$in_default = false,$in_rss = false});
remove_custom_archive($post_type);
add_to_default_archive($post_type);
remove_from_default_archive($post_type);
reset_custom_archive_to_default($post_type);
</code></pre>
Filters
<pre><code>cpa_rewrite_label
</code></pre>
Allows you to format the label returned by get_custom_archive_label().
<pre><code>cpa_templates
</code></pre>
Allows you to provide or alter the list of templates Custom Post Archives searches for.

Custom Post Archives

Custom Post Archives creates a fully featured set of archives for each post type using a robust back-end and native templating functionality.

M.Code

Jan Fabry

Understand how rewrite rules work could be userful. 
Natively on WordPress you can’t analyze what’s working / not working regarding your urls. 
Through this interface you will be able to analyze every single url and see what’s matching.
Warning 
This tool will not change / add any rules for you it’s only an analyzer
<h4>Main features:</h4>
<ul>
<li>Live URL Analyzer</li>
<li>Highlight parameters</li>
<li>AJAX Permalinks refresh button</li>
<li>Change UI (Light / Dark)</li>
</ul>

Url Rewrite Analyzer

See clearly and understand how WordPress rewrite rules work within a simple and clean interface

Custom Post Archives vs Url Rewrite Analyzer