webdeveric

This plugin provides a simple <code>[meta]</code> shortcode that allows you to fetch meta information for the current <code>$post</code>. 
There are options to return a single value, multiple values joined by a user defined string, or a JSON string.
Examples:
<pre><code>[meta name="your_meta_field"]
</code></pre>
This will return the value of “your_meta_field”. If the value is an array, it will return a comma separated list, unless you specify an alternative join string.
<pre><code>[meta name="your_meta_field" single="false"]
</code></pre>
By default, [meta] will return a single value. If you have multiple meta fields with the same name, you can get them all by setting single=”false”.
<pre><code>[meta name="your_meta_field" single="false" json="true"]
</code></pre>
This will return the JSON encoded value of “your_meta_field”.
<pre><code>[meta name="your_meta_field" single="false" join="|"]
</code></pre>
This will return a pipe separated values of “your_meta_field”.
<pre><code>[meta name="your_meta_field" shortcode="false"]
</code></pre>
By default, the value will be passed to do_shortcode, unless you turn if off.
<pre><code>[meta name="your_meta_field" filters="true"]
</code></pre>
There are a couple filters available if you want to filter the value. They are called after do_shortcode and before any JSON/array handling. 
They are on be default, but can be turned of with filters=”false”. The filters are “meta_fetcher_value” and “meta_fetcher_{$name}”.

Meta Fetcher

This plugin provides a simple [meta] shortcode that allows you to fetch meta information for the current $post.

Meta Fetcher vs Advanced Custom Fields: Extended