Sharaz Shahid

Code Widget is simple widget allows you to insert any arbitrary Text/HTML and run PHP Code or Short Code. This Widget parses PHP code into simple text and much more.
Only users with the unfiltered_html role will be allowed to insert unfiltered HTML. This includes PHP code, so users without admin or editor permissions will not be able to use this to execute code, even if they have widget editing permissions. 
This plugin is developed and maintained by <a href="https://twitter.com/sharazghouri1" rel="nofollow ugc">Sharaz Shahid</a>

Code Widget

Code widget help  to  add  Short Code, PHP Code, HTML, and Simple Text in widget.

Peter Wooster

This plugin allows editors to request a promo code and optional email address from users to get access to a document and track its usage.
Features for Editors
<ul>
<li>a short code [promo] is provided that will display a form that requests a 
promo code and optionally an email address from your users and then takes them to a url.</li>
<li>a summary of the accesses using this code is displayed to editors by the short code</li>
<li>editors can clear the logging from the short code</li>
<li>there is no back end admin page </li>
</ul>
Short Code Arguments are:
<ul>
<li>code= a string that must be entered access the document, required</li>
<li>document= a url to the document that you want to track, required</li>
<li>name= the name to display for the document, required</li>
<li>email= ‘yes’ to request the user’s email</li>
<li>id= the id on the form tag, useful for CSS, default is ‘promo’</li>
<li>promolabel= the label for the promo code input field, default is ‘Please enter promo code for name’</li>
<li>emaillabel= the label for the email input field, default is ‘Please enter your email address’</li>
<li>liststyle= the style or class for the ul, default is ‘style=”list-style:none”‘</li>
</ul>

Simple Promo Code

A very simple plugin that allows an editor to track accesses to a document by promo code.

Code Widget vs Simple Promo Code