crgeary

This plugin reinstates the content/wp-editor field that was removed from the “page for posts” page in the 4.2.2 update.

Add Editor To Page For Posts

Reinstate the WP Editor on the "page for posts" page.

Dev7studios

Typewriter completely removes the “Visual Editor” feature in WordPress and replaces it 
with a simple Markdown editor so that you can join sites like StackOverflow and Github in writing in the 
simple and growingly popular <a href="http://daringfireball.net/projects/markdown" rel="nofollow ugc">Markdown format</a>.
For the more technical among you, Typewriter removes the TinyMCE editor and defaults to a Markdown specific “Text” editor 
and parses the output using MarkdownExtra.

Typewriter

Typewriter replaces the Visual Editor with a simple Markdown editor for your posts and pages.

Add Editor To Page For Posts vs Typewriter