Markus Echterhoff

This is the Markdown plugin for bbPress that I needed, but could not find. It replaces the standard editor with a responsive Markdown form that includes a preview and formatting help. The Markdown is parsed using PHP Markdown(Extra) and saved as a regular HTML bbPress post. The Markdown is saved separately for later editing. The plugin can be activated and deactivated without affecting your bbPress data, it uninstalls cleanly (deleting any saved Markdown code) and is multisite compatible.
Tip: You can give the plugin a slight performance boost if your forum is Markdown only or you don’t care that some non-Markdown posts are displayed slightly different than before (e.g. not turning newlines into paragraphs or no longer making URLs automatically clickable), by adding the following to your theme’s functions.php: <code>add_filter( 'bbpmd_remove_output_filters_for_all_posts', '__return_true' );</code>

bbP Markdown

Thank you for this well-designed plugin, it works seamlessly with existing bbPress setup.

I appreciate the effort and thought put into it, for example, how it integrates techniques from several other related plugins, and how it uninstalls cleanly.

One thing I wish it had is a way to apply the same Markdown editor to normal comments as well.

Works wonders

Elegant Markdown support for your bbPress forums.

Terry L.

Generation of diagrams and flowcharts from text in a similar manner as markdown by using <a href="https://mermaid.js.org/" rel="nofollow ugc">mermaid.js</a>
WP Mermaid is smart enough that loads mermaid.js only when your posts contain Mermaid syntax, by detecting the use of shortcode and block. So it will not be loaded on your website everywhere.
= See also
If you are looking for a <a href="https://github.com/terrylinooo/githuber-md" rel="nofollow ugc">Markdown editor</a> supporting Mermaid, you can also check out my WordPress plugin called the <a href="https://wordpress.org/plugins/wp-githuber-md/" rel="ugc">WP Githuber MD</a>, which provides a variety of features not just Mermaid, it is worth to try.
<h3>Translations</h3>
Chinese (zh_TW) by <a href="https://terryl.in/" rel="nofollow ugc">Terry L.</a>. 
Japanese (ja_JP) by <a href="https://colocal.com/" rel="nofollow ugc">Colocal</a>.
<h3>Copyright</h3>
WP Mermaid, Copyright 2020 TerryL.in 
WP Mermaid is distributed under the terms of the GNU GPL
This program is free software: you can redistribute it and/or modify 
it under the terms of the GNU General Public License as published by 
the Free Software Foundation, either version 3 of the License, or 
(at your option) any later version.
This program is distributed in the hope that it will be useful, 
but WITHOUT ANY WARRANTY; without even the implied warranty of 
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 
GNU General Public License for more details.

WP Mermaid

Generation of diagrams and flowcharts from text in a similar manner as markdown by using mermaid.js

bbP Markdown vs WP Mermaid