bigsmoke

<p>This plugin was born out of a very simple need. Back in the day, when the wpautop filter was really sucky, I got annoyed and turned it off for my <a href="http://blog.bigsmoke.us/" rel="nofollow ugc">blog</a>. However, years later, me (but mostly my co-author, Halfgaar) got equally annoyed by having to manually type in all the angle brackets. I wanted to turn on the filter again, but I didn’t want this to affect all my old posts. Hence this plugin. See <a href="http://blog.bigsmoke.us/2010/12/09/wpautop" rel="nofollow ugc">this blog post</a> for more history.</p>


wpautop control

Adds a global setting to turn the wpautop filter on and off. It also allows you to override this default for any post by adding a wpautop custom field …

MarcusPope

J-Ro

Azragh

<p>This plugin preserves the user-generated HTML markup in the TinyMCE editor.  Unlike other plugins this one allows developers to work in the HTML tab AND end-users to work in the WYSIWYG Visual tab at the same time!  No longer will your HTML markup be completely munged into an unrecognizable form when you switch between those tabs.  And you don’t have to hang your users/editors out to dry when you hand off the project with a disabled Visual tab.</p>
<h4>IMPORTANT: Please read the installation instructions carefully.  If you have existing content it will not render properly after activating this plugin until you use the Fix It Tools.</h4>
<p>(One user didn’t read or follow these steps and panicked thinking I ruined their website.)</p>
<p>It also supports HTML5 Block Anchor tags in addition to other HTML5 elements, something that is currently not supported in WordPress via any existing plugins.</p>


Preserved HTML Editor Markup Plus

Preserves HTML and developer edits in HTML AND WYSIWYG tab.  Supports inline scripts/css, JavaScript code blocks and HTML5 content editing

wpautop control vs Preserved HTML Editor Markup Plus