Pierre Carion

Scrippet Block enables users to write screenplay content using Markdown in Fountain syntax directly within the WordPress block editor. 
This plugin automatically converts the entered text into a properly formatted HTML page, adhering to industry standards for screenplays.
Features: 
– Fountain Syntax Support: Write your screenplay using the intuitive Fountain markup language. 
– Real-Time Preview: See the formatted screenplay as you type. 
– Easy Integration: Add the Scrippet block to any post or page.
The Fountain Markdown language was designed by <a href="https://johnaugust.com/" rel="nofollow ugc">John August</a>.

Scrippet Block

This plugin adds a block to the Gutenberg editor to render HTML Fountain-formatted screenplay snippets.

Stephen Harris

This plugin allows you to write posts (of any post type) using the Markdown syntax. The plugin converts the Markdown into HTML prior to saving the post. When editing a post, the plugin converts it back into Markdown syntax.
The plugin also allows you to enable Markdown in comments and bbPress forums. In these instances the plugin adds a toolbar, and preview of the processed Markdown with <a href="http://code.google.com/p/google-code-prettify/" rel="nofollow ugc">Prettify</a> syntax highlighter applied (similiar to that used in the Stack Exchange websites such as <a href="http://wordpress.stackexchange.com/" rel="nofollow ugc">WordPress Stack Exchange</a>).
WP-Markdown stores the processed HTML, so deactivating the plugin will not affect your posts, comments or bbPress forums.

WP-Markdown

Version 1.5.1 of the plugin works almost perfectly.
I'm just waiting for the upcoming 1.6 update (which is in alpha on GitHub) to be pushed, so I can use GitHub Flavor-style codeblocks specifying the exact language.



Waiting for 1.6

Allows Markdown to be enabled in posts, comments and bbPress forums.

Scrippet Block vs WP-Markdown