Simon Wheatley

This plugin allows you to upload images for categories and custom taxonomies, and provides a template tag to show the image(s) in your theme.
To activate the images for a custom taxonomy, go to Settings > Category Images II.
To upload an image for a category, or a term in a custom taxonomy, go to the edit screen for that category or term.
<h3>Tag: ciii_category_images() && ciii_term_images()</h3>
<pre><code><?php ciii_category_images(); ?>
</code></pre>
Used within the loop, the above template tag will show the thumbnails for all the category images for the category of that post. If some categories have no image, no image is shown for that category (i.e. there is no default image). You will need to style the HTML output yourself.
<pre><code><?php ciii_category_images( 'category_ids=37,27' ); ?>
</code></pre>
Used anywhere and provided with category IDs, the above template tag will show the thumbnails for all the categories specified. If some categories have no image, no image is shown for that category (i.e. there is no default image here either).
(Note that this tag will get confused if you use it outside the loop. If you want to add a single image to your category archive pages, please use <code>ciii_category_archive_image()</code> below.)
<pre><code><?php ciii_term_images( 'post_tag' ); ?>
</code></pre>
Used within the loop, the above template tag will show the thumbnails for all the term images for the specified taxonomy (in this case ‘post_tag’) which are associated with that post. If some terms have no image, no image is shown for that term (i.e. there is no default image). You will need to style the HTML output yourself.
<pre><code><?php ciii_term_images( 'post_tag', category_ids=37,27' ); ?>
</code></pre>
Used anywhere and provided with term IDs, the above template tag will show the thumbnails for all the terms specified. If some terms have no image, no image is shown for that term (i.e. there is no default image here either). You will need to style the HTML output yourself.
You can pass the <code>show_description</code> parameter to not show the term or category description, and the <code>size</code> parameter to specify either ‘original’ or ‘thumbnail’.
<h3>Tag: ciii_category_archive_image()</h3>
<pre><code><?php ciii_category_archive_image(); ?>
</code></pre>
This tag is designed to be used on the category archive page, either inside or outside the loop. It will show the image for the category in question.You can specify the maximum side of the category image thumbnail in “Settings > Category Images II”. You can upload, and delete, images for each category from “Manage > Categories”, click into each category you wish to edit and you’ll see the uploading and deletion controls (deletion controls only show up if the category already has an image uploaded).
The HTML output is fairly well classed, but if you need to adapt it you can. Create a directory in your theme called “view”, and a directory within that one called “category-images-ii”. Then copy the template files <code>view/category-images-ii/term-images.php</code> from the plugin directory into your theme directory and amend as you need. If these files exist in these directories in your theme they will override the ones in the plugin directory. This is good because it means that when you update the plugin you can simply overwrite the old plugin directory as you haven’t changed any files in it. All hail <a href="http://urbangiraffe.com/" rel="nofollow ugc">John Godley</a> for the code which allows this magic to happen.
Plugin initially produced on behalf of <a href="http://www.puffbox.com" rel="nofollow ugc">Puffbox</a>.
Is this plugin lacking a feature you want? I’m happy to accept offers of feature sponsorship: <a href="http://www.simonwheatley.co.uk/contact-me/" rel="nofollow ugc">contact me</a> and we can discuss your ideas.
Any issues: <a href="http://www.simonwheatley.co.uk/contact-me/" rel="nofollow ugc">contact me</a>.

Taxonomy Images II

This plugin allows you to upload images for categories and custom taxonomies, and provides a template tag to show the image(s) in your theme.

marksouthard

This plugin adds the portfolio custom post type to your WordPress blog. By default, the plugin will append portfolio meta information (client, date, and project URL) to the portfolio post. It will prepend media elements (gallery, audio and video media) to portfolio posts.
<h3>Creating Themes for this Plugin</h3>
There are several handy bits that you can use within your theme: 
1. By default, the portfolio posts are displayed in the portfolio archive. However, you may want to create a custom page template that will display your portfolio posts. As such, you’ll need to disable the archives. In your theme’s function file, use the following code: <code><?php if( !defined('TZP_DISABLE_ARCHIVE') ) define('TZP_DISABLE_ARCHIVE', TRUE); ?></code> 
This will enable child themes to enable the portfolio archives if desired. 
2. Set custom slugs for ‘portfolio’ and ‘portfolio-type’ by defining constants for: <code>TZP_SLUG</code> and <code>TZP_TAX_SLUG</code>. After defining the constants, save the Permalink Settings. Also, define the constants as above to allow a child theme to customize the slugs. 
3. There are several actions and filters available for adding additional custom fields to the existings metaboxes. Have a look through metaboxes.php to see how these all play together. 
4. To prevent the media and meta from being added to the_content(), remove these filters: <code>tzp_add_portfolio_post_media</code> and <code>tzp_add_portfolio_post_meta</code> 
5. To update the image size used for galleries add a filter to ‘tzp_set_gallery_image_size’. Pass the string name or an array of the image size to be used.
<h3>Complete List of Constants and Actions/Filters</h3>
Constants
<ul>
<li><code>TZP_DISABLE_CSS</code> set to true to prevent plugin from loading basic CSS</li>
<li><code>TZP_PORTFOLIO_ORDER</code> default is ‘ASC’</li>
<li><code>TZP_PORTFOLIO_ORDERBY</code> default is ‘menu_order’</li>
<li><code>TZP_DISABLE_ARCHIVE</code> default is false</li>
<li><code>TZP_SLUG</code> default is ‘portfolio’</li>
<li><code>TZP_DISABLE_REWRITE</code></li>
<li><code>TZP_TAX_SLUG</code></li>
<li><code>TZP_DISABLE_MEDIAELEMENT_STYLE</code> prevent the plugin from loading the default mediaelement stylesheet</li>
</ul>
Actions
<ul>
<li><code>tzp_portfolio_settings_meta_box_fields</code> add meta fields to the settings section</li>
<li><code>tzp_portfolio_gallery_meta_box_fields</code> add meta fields to the gallery section</li>
<li><code>tzp_portfolio_audio_meta_box_fields</code> add meta fields to the audio section</li>
<li><code>tzp_portfolio_video_meta_box_fields</code> add meta fields to the video section</li>
</ul>
Actions added in plugin that you may want to remove
<ul>
<li><code>tzp_add_custom_css</code></li>
<li><code>tzp_portfolios_display_order</code></li>
</ul>
Filters
<ul>
<li><code>tzp_metabox_fields_save</code> add fields to be saved (use url, html, checkbox, or images for sanitization)</li>
<li><code>tzp_gallery_classes</code> class added to gallery; default is tzp-portfolio-gallery</li>
<li><code>tzp_set_gallery_image_size</code> default image size is ‘full’</li>
<li><code>tzp_portfolio_labels</code></li>
<li><code>tzp_portfolio_supports</code></li>
<li><code>tzp_portfolio_post_type_args</code></li>
<li><code>tzp_portfolio_type_labels</code></li>
<li><code>tzp_portfolio_type_args</code></li>
</ul>
Filters applied in plugin that you may want to remove
<ul>
<li><code>tzp_add_portfolio_post_media</code></li>
<li><code>tzp_add_portfolio_post_meta</code></li>
</ul>

Zilla Portfolio

A complete portfolio plugin for creative folks

Taxonomy Images II vs Zilla Portfolio