Blackbam

Clients tend to get crazy if they have to edit HTML code on their own or if little things are not working as expected. Make your editing experience as simple and good as possible:
Customize TinyMCE / TinyMCE Advanced (or other TinyMCE variants) to fit your needs.
Basically, this Plugin does two things for you:
A. This Plugin installs two files editor-style.css and editor-style-shared.css into your Theme folder (so you can still do updates of the Plugin), which can be edited in the backend of your site
<ul>
<li>editor-style.css is used for styling your TinyMCE Editor</li>
<li>editor-style-shared.css is used for styles to be used in your theme AND in your TinyMCE editor (so you do not have to copy)</li>
</ul>
Note: To use this feature, you have to write your own CSS code into this files, which is the only professional way to do it.
B. The main feature of this Plugin is to offer a GUI to create custom style formats for TinyMCE dynamically
<ul>
<li>Easy and very fast to add/change/delete</li>
<li>You do not have to change one single line of source code</li>
</ul>
Current Languages:
<ul>
<li>en_US</li>
<li>de_DE</li>
<li>es_ES (Andrew Kurtis, webhostinghub.com)</li>
<li>sr_RS (Ognjen Djuraskovic, firstsiteguide.com)</li>
</ul>
Please report any bugs you may encounter and support this Plugin if you like it.
Plugin URL: <a href="http://www.blackbam.at/blackbams-blog/2013/06/03/wordpress-plugin-tinymce-and-tinymce-advanced-professsional-formats-and-styles/" rel="nofollow ugc">http://www.blackbam.at/blackbams-blog/2013/06/03/wordpress-plugin-tinymce-and-tinymce-advanced-professsional-formats-and-styles/</a>

TinyMCE and TinyMCE Advanced Professsional Formats and Styles

Improve, style and customize TinyMCE / TinyMCE Advanced using custom editor stylesheets and a dynamically configurable styles dropdown.

scribu

Jotschi

Front-end Editor is a plugin that lets you make changes to your content directly from your site. No need to load the admin backend just to correct a typo.
It makes the same <a href="https://codex.wordpress.org/Roles_and_Capabilities" rel="nofollow ugc">capability</a> checks, so that if a user isn’t allowed to edit something in wp-admin, they aren’t allowed to edit it in the front-end either.
You can edit posts, pages, custom post types, comments, widgets and many <a href="http://github.com/scribu/wp-front-end-editor/wiki/List-of-editable-elements" rel="nofollow ugc">more elements</a>.
Goals:
<ul>
<li>save as many trips to the backend as possible</li>
<li>compatible with any theme, out of the box</li>
<li>light and fast</li>
</ul>
Support and development:
<a href="https://wordpress.org/support/plugin/front-end-editor" rel="ugc">Support</a> is handled by the lovely <a href="https://wordpress.org/support/profile/designsimply" rel="ugc">designsimply</a>.
I am not developing the plugin anymore; only applying the patches that other people send via <a href="https://github.com/scribu/wp-front-end-editor/" rel="nofollow ugc">Github</a>.
Credits:
<ul>
<li><a href="http://aloha-editor.org" rel="nofollow ugc">Aloha Editor</a> for the fantastic WYSIWYG editing component</li>
</ul>
Links: <a href="http://github.com/scribu/wp-front-end-editor/wiki" rel="nofollow ugc">Documentation</a> | <a href="http://scribu.net/wordpress/front-end-editor" rel="nofollow ugc">Plugin News</a> | <a href="http://scribu.net" rel="nofollow ugc">Author’s Site</a>

Front-end Editor

Edit content inline, without going to the admin area.

TinyMCE and TinyMCE Advanced Professsional Formats and Styles vs Front-end Editor