lzw.

<p>A plug-in can enable all classic functions, and also contains some practical functions</p>
<ol>
<li>Register hierarchical posts to build documents</li>
<li>Enable Link Manager</li>
<li>Enable Classic Editor</li>
<li>Enable Classic Widgets</li>
<li>Gravatar Mirror Server</li>
<li>In archive and home page display the post excerpt</li>
<li>Password protected posts only the content after <code><--more--></code> require password</li>
<li>Use vuejs and <code><div class="html-demo"></div></code> to preview html code</li>
<li>Img Src Prefix, like a CDN</li>
<li>Enable Login Limit</li>
<li>Enable SMTP Email</li>
<li>Highlight Style</li>
</ol>


ClassicPlus To Enable Classic Functions

A plug-in can enable all classic functions, and also contains some practical functions

Samuel Wood (Otto)

<p>Replace the smilies with the original versions from previous versions of WordPress.</p>
<p>Added bonus: Disables all “emoji” functionality in WordPress 4.2 and above.</p>


Classic Smilies

I have been using this plugin and I proudly recommend to everyone.
PRO
- It improve performance by removing inline JS and reducing HTTP requests.
Cons
- Smiley images shouldn't be look dull. It could be appear clear like Original.

Thanks & Regards,
Gulshan

Very goood plugin, some improvement needed

Replace the smilies with the original versions from previous versions of WordPress.

ClassicPlus To Enable Classic Functions vs Classic Smilies