fr33think3r

This plugin makes wordpress posting/editing a less strainful experience. It weeds out all the junk in the post editor window so that its easier to concentrate on writing. This is sort of an alternative to WordPress Full Screen Editor.
You can read about about it in this blog post => http://www.humbug.in/2011/wordpress-plugin-cleaner-wordpress-editor-trying-to-make-wordpress-editing-a-pleasure/
The plugin will change the following things:
<ul>
<li>Editor Font will be changed to Georgia instead of Consolas</li>
<li>Editor Font size will be increased by 110% in the Visual Editor and 120% in the HTML Editor. The Line Height will also be increased accordingly.</li>
<li>Editor Background Color will be changed to #FCFCFC and the Font Color to #333333. This is to reduce strain on the eyes. The original black and white combination has a high contrast.</li>
<li>The Editor will be set into the Single Column Mode.</li>
<li>The Left Side Navigation bar will be collapsed.</li>
<li>All extra non functional elements will be hidden.</li>
</ul>
Since the plugin forces the Edit Screen into a single column scheme, once you have installed the plugin, all the widgets which you normally see on the right sidebar, like the publish button widget, will be pushed below the Visual/HTML Editor box. You will have to scroll down to see those widgets. Those widgets can be dragged and dropped to reorder them. However if you do re-order them, when you deactivate this plugin, they will retain that order and won’t revert to the original scheme. So please do make sure that you like the new Edit Screen, before re-ordering your widgets.
Uninstalling the plugin will automatically take you back to your previous settings.
<h3>Upgrade</h3>
Upgrade using the Plugins menu

Cleaner WordPress Editor

This plugin makes wordpress posting/editing a less strainful experience. It weeds out all the junk in the post editor window so that its easier to con …

jwilsson

WordPress adds all kinds of <code><meta></code>-tags to the <code><head></code> section of your site. 
Some of these tags are quite good and have real uses, others make sense for some sites and others doesn’t. 
Some tags are even considered a security risk, since they tell the world which version of WordPress you’re currently running.
This plugin allows you to remove all of the <code><meta></code>-tags that WordPress outputs by default. 
You decide on a tag-by-tag basis which tags to remove and which to keep. Nothing’s enforced, you’re 100% in charge.

wp_head() cleaner

Great plugin

Remove unused tags from wp_head() output.

Cleaner WordPress Editor vs wp_head() cleaner