keesiemeijer

Add additional content on a post per post basis in the edit or publish post screen. The additional content editor can be used with all public post types.
Use this plugin for content that you, for whatever reason, don’t want to be included in the post content itself, like <a href="https://keesiemeijer.wordpress.com/2015/05/25/how-to-remove-specific-shortcodes-from-post-content/" rel="nofollow ugc">shortcodes</a>, or code snippets used by other plugins.
Another benefit of using this plugin is if you want content to be displayed before or after content that is automatically added by other plugins. The <a href="https://wordpress.org/plugins/additional-content/faq/" rel="ugc">priority parameter</a> will let you do just that.
For more information visit the <a href="https://github.com/keesiemeijer/additional-content" rel="nofollow ugc">GitHub repository</a>.

Additional Content

Display additional content before or after post content in single post pages.

swadeshswain

1 .This plugin allows you to easily replicate redudant information/data on different pages by defining them as shortcodes. 
Requiring no access for core php files, the plugin is secured and easy to use.
2 . You can write php code inside the editor and generate shortcodes

Custom ShortCode Creator

This Custom Shotcode Creator plugin allows you to quickly define custom shortcodes via admin dashboard without any hassle.

Additional Content vs Custom ShortCode Creator