Bill Erickson

The Genesis Grid plugin was design to allow users of the Genesis theme to easily display their posts in a grid format.
“Features” are full-width posts at the top of the listing. “Teasers” are the posts broken into columns. You can set the number of Features and Teasers for both the homepage and inner pages, and how many columns the teasers are broken into.
You can also specify the image sizes used for Features and Teasers. I recommend setting Features for Large, and Teasers for Medium. Then go to Settings > Reading and set the dimensions of those images as needed. If you have already uploaded images, use the Regenerate Thumbnails plugin to rebuild the thumbnails at these dimensions. If images aren’t showing up, make sure you have “Include featured images” checked in Genesis > Theme Settings > Content Archives
Finally, you can specify where the grid loop is used by checking Home, Category Archives, Tag Archives, Taxonomy Archives, Author Archives, and/or Search Results. See the Developers section for more fine-grained control.
<a href="https://github.com/billerickson/Genesis-Grid/wiki" rel="nofollow ugc">Documentation</a>
No support will be provided by the developer

Genesis Grid

Customize your archive pages in Genesis to use a grid layout. Requires the Genesis theme.

Scott Reilly

This plugin provides thirteen handy template tags that relate to the index/position of a post within a loop’s listing of posts.
Some of the template tags provided by this plugin relate to the position of the current post within the current loop:
<ul>
<li><code>c2c_is_first()</code></li>
<li><code>c2c_is_last()</code></li>
<li><code>c2c_is_at_index()</code></li>
<li><code>c2c_is_even()</code></li>
<li><code>c2c_is_odd()</code></li>
<li><code>c2c_get_the_index()</code></li>
<li><code>c2c_is_index_within()</code></li>
<li><code>c2c_the_index()</code></li>
</ul>
Other functions help you get a post (or posts) at a given position in the current loop:
<ul>
<li><code>c2c_get_post_by_index()</code></li>
<li><code>c2c_get_posts_by_index()</code></li>
</ul>
While the remaining three functions relate to index information about the loop in general:
<ul>
<li><code>c2c_get_last_index()</code></li>
<li><code>c2c_is_post_in_loop()</code></li>
<li><code>c2c_is_valid_index()</code></li>
</ul>
Please see the Template Tags section (in some places found under the Other Notes section) for descriptions of all the functions and their arguments.
Note that index counting begins at 0, which means the first item has an index of 0. An index of -1 indicates no posts were found.
Links: <a href="https://coffee2code.com/wp-plugins/post-index-helpers/" rel="nofollow ugc">Plugin Homepage</a> | <a href="https://wordpress.org/plugins/post-index-helpers/" rel="ugc">Plugin Directory Page</a> | <a href="https://github.com/coffee2code/post-index-helpers/" rel="nofollow ugc">GitHub</a> | <a href="https://coffee2code.com" rel="nofollow ugc">Author Homepage</a>
<h3>Developer Documentation</h3>
Developer documentation can be found in <a href="https://github.com/coffee2code/post-index-helpers/blob/master/DEVELOPER-DOCS.md" rel="nofollow ugc">DEVELOPER-DOCS.md</a>. That documentation covers the numerous template tags provided by the plugin.
As an overview, these are the template tags provided the plugin:
<ul>
<li><code>c2c_get_last_index()</code> : Gets the index number for the last post in the loop listing</li>
<li><code>c2c_get_post_by_index()</code> : Get post based on specified index</li>
<li><code>c2c_get_posts_by_index()</code> : Get posts based on specified array of indexes</li>
<li><code>c2c_get_the_index()</code> : Get the index for the current post</li>
<li><code>c2c_is_at_index()</code> : Is the current index at the specified index?</li>
<li><code>c2c_is_even()</code> : Is the current post at an even position? (i.e. 0, 2, 4, …)</li>
<li><code>c2c_is_first()</code> : Is the current post the first listed post?</li>
<li><code>c2c_is_last()</code> : Is the current post the last listed post?</li>
<li><code>c2c_is_odd()</code> : Is the current post at an odd position? (i.e. 1, 3, 5, …)</li>
<li><code>c2c_is_index_within()</code> : Is the current post (or one at the specified index) within the bounds of a specified range?</li>
<li><code>c2c_is_post_in_loop()</code> : Is the specified post within the current loop?</li>
<li><code>c2c_is_valid_index()</code> : Is the specified index valid?</li>
<li><code>c2c_the_index()</code> : Echo the current post’s index</li>
</ul>

Post Index Helpers

A variety of template tags related to the index/position of a post within a loop's listing of posts.

Genesis Grid vs Post Index Helpers