viewup

The plugin allow you to select a post type to be the products and a meta name to be the price. 
With shortcodes, you can add a ADD TO CART button and a CART PAGE. 
The plugin integrates with <code>contact form 7</code>, allowing you to insert on your contact form the user cart.

UP WP Cart

Simple cart plugin for WordPress, with Contact Form 7 integration

Yordan Soares

Takayuki Miyoshi

Listo is a simple plugin that supplies other plugins and themes with <a href="https://github.com/rocklobster-in/listo/tree/trunk/modules#lists-and-subgroups" rel="nofollow ugc">commonly used lists</a>.
<h4>Usage</h4>
<pre><code>$countries = listo(
 // List type
 'countries',
 // Options
 array(
 'group' => 'un',
 'orderby' => 'value',
 'order' => 'DESC',
 )
);
</code></pre>

Listo

The documentation is non-existent as is evident from the number of users asking for help

Nice plugin, but requires better documentation

Have a lot of default lists, but i couldn't customize with my own lists

UP WP Cart vs Listo