Chris

danfinnigan

A plugin to define acronyms in pages, posts and comments using <code><acronym></code> or <code><abbr></code> mark-up. Defined acronyms are underlined, and the definition appears as a tool-tip if the cursor is placed over the acronym. The list of acronyms is managed through an Admin interface.
This plugin is based on Chris Cox’s Acronyms-2, which was itself based on Joel Bennett’s Acronym Replacer plugin (http://www.huddledmasses.org/), ported to Nucleus CMS by Joel Pan as the NP_Acronym plugin and now ported back to WordPress.

Acronym Manager

A plugin to define acronyms in pages, posts and comments site-wide.  Defined acronyms are underlined, and the definition appears as a tool-tip.

ramon fincken

GUI in backend to define constants without any programming knowledge. Every file in your theme has access to your constant. No need to edit a functions.php file or a separate plugin file anymore 
Results in constants like: define(‘MY_CONSTANT’,$value);
Options: Re-arrange constants (Drag and drop) 
Protect constants as “internal value” 
Optional description per constant 🙂
Coding by: 
<a href="https://wordpress.org/extend/plugins/profile/dvankooten" rel="ugc">Danny van Kooten</a> 
<a href="http://www.mijnpress.nl" rel="nofollow ugc">MijnPress.nl</a> <a href="http://twitter.com/#!/ramonfincken" rel="nofollow ugc">Twitter profile</a> <a href="https://wordpress.org/extend/plugins/profile/ramon-fincken" rel="ugc">More plugins</a>

Define Constants

GUI in backend to define constants without any programming knowledge. Every file in your theme has access to your constant.

Acronym Manager vs Define Constants