BisonTech

This plugin replace WP default admin/login/register page. 
The technique used is pretty brutal but the best currently possible, the plugin replaces the modified files automatically. 
To make the plugin run the web server must be able to write to the wp-admin directory. 
more info @ http://www.bisontech.net

LogoReplacer

This plugin replace WP default admin/login/register page.

neffff

<blockquote>
“Markdeep is ideal for design documents, specifications, README files, code documentation, lab reports, blogs, and technical web pages. Because the source is plain text, Markdeep works well with software development toolchains.” 
 — http://casual-effects.com/markdeep/
“Markdeep is a text formatting syntax that extends Markdown, and a JavaScript program for making it work in browsers. The two most powerful features are its ability to run in any web browser on the client side and the inclusion of diagrams.” 
 — https://casual-effects.com/markdeep/features.md.html
</blockquote>
This plugin adds a gutenberg block supporting the <a href="http://casual-effects.com/markdeep/" rel="nofollow ugc">markdeep</a> language. The editor shows both a plaintext 
area for composing the text, and a preview area to display the rendered block.
<h3>MathJax & CDN</h3>
In order to support <a href="https://www.mathjax.org/" rel="nofollow ugc">MathJax</a> features, the MathJax library is loaded from an external <a href="https://cdnjs.cloudflare.com/" rel="nofollow ugc">CDN (cdnjs/cloudflare)</a>.
<blockquote>
MathJax.org does not collect, maintain, distribute, purchase, or sell personal data of any kind, and uses no cookies or other tracking 
 or advertising techniques.
Likewise, the MathJax software does not track you, and uses local storage only to maintain your preferences as set by the MathJax contextual menu.
— https://www.mathjax.org/#privacy-statement
</blockquote>
If you do not change the CDN you will be subject to cloudflare’s <a href="https://www.cloudflare.com/website-terms/" rel="nofollow ugc">terms</a> & <a href="https://www.cloudflare.com/privacypolicy/" rel="nofollow ugc">privacy policy</a>.
This CDN can be changed with a one-line script. (Alternately, use the WordPress plugin file editor to uncomment a similar line in 
 markdeep-block.php). In the future this should be an exposed configuration option.
To override the CDN use:
<pre><code>`php
</code></pre>
// Markdeep currently uses version 2.7.6 
add_filter( ‘markdeepblock_mathjax_url’, fn($u) => ‘https://cdn.jsdelivr.net/npm/mathjax@2.7.6/unpacked/MathJax.js?config=TeX-AMS-MML_HTMLorMML’ ); 
 `
<h3>Planned features</h3>
<ul>
<li>UI to configure CDN for JS resources (Markdeep, MathJax).</li>
<li>Configurable style per block.</li>
<li>Drop-down style selection of styles (globally & per-block).</li>
<li>Get MathJax commands working in editor. (MathJax currently works in posts).</li>
<li>Markdeep specific LaTeX/MathJax macros. (e.g. θ₀, θ₁, etc.)</li>
<li>Configurable MathJax macros.</li>
<li>Optional Table of Contents (currently suppressed)</li>
</ul>
<h3>Logo</h3>
The logo is derived from <a href="https://dustincurtis.com" rel="nofollow ugc">Dustin Curtis’s</a> https://github.com/dcurtis/markdown-mark.

Markdeep Block

Markdeep Block is a WordPress plugin for adding Gutenberg blocks supporting Markdeep syntax.

LogoReplacer vs Markdeep Block