Justin Tadlock

Hybrid Hook is a plugin that allows end users the ability to tap into the <a href="https://wordpress.org/extend/themes/hybrid" title="Hybrid WordPress theme framework" rel="ugc">Hybrid theme’s</a> extensive hook selection by providing a user interface in the WordPress admin for adding custom content.
You must be using at least version 0.9 of the <a href="https://wordpress.org/extend/themes/hybrid" title="Hybrid theme" rel="ugc">Hybrid theme</a> for this plugin to work. It will also not work with any other themes.
Features:
<ul>
<li>Ability to add custom HTML nearly anywhere on your site.</li>
<li>Use shortcodes to quickly add content.</li>
<li>Allows the input of JavaScript.</li>
<li>User can select the priority the code will run.</li>
<li>Can execute PHP code if the option is selected.</li>
</ul>

Hybrid Hook

Allows the addition of HTML, shortcodes, PHP, and/or JavaScript to the Hybrid theme's hooks from the WordPress admin.

Michael

Billy

This plugin, developed by <a href="https://2mb.solutions/" rel="nofollow ugc">2MB Solutions</a>, allows you to place predetermined text/html/php at the top and/or bottom of each post. In addition, you can override the placing of text at the bottom and/or top of a specific post, override the placing of text on the homepage or on a post individually, or run arbitrary php inside a post.
For more on 2MB, please visit (https://2mb.solutions/).
Note that all development now takes place at <a href="https://github.com/2mb-solutions/autocode/" rel="nofollow ugc">github</a>.

2MB Autocode

This plugin allows you to place predetermined text/html/php at the top or bottom of posts.

Hybrid Hook vs 2MB Autocode