Ryan Welcher

Patrick Rauland

This is a simple WordPress plugin which allows a site adminstrator to limit the number of widgets in a sidebar. You simply go the the settings -> limit widgets page and customize the maximum number of widgets used for each menu.
A nice visual effect will appear in the sidebar in the WordPress admin and the client will be unable to drop new widgets into the sidebar once the cap has been reached.
You can set widgets to have unlimited widgets by leaving the field blank. You can also set the sidebar to have 0 widgets effectively diabling it.
Credits
This is the Internet which means that nothing is created from scratch. This plugin is mostly a combination of work from other people which I just packaged into something with a user interface for easy management.
<ul>
<li><a href="http://wordpress.stackexchange.com/users/8/jan-fabry" rel="nofollow ugc">Jan Fabray</a> on <a href="http://wordpress.stackexchange.com/questions/19907/limit-number-of-widgets-in-sidebars" rel="nofollow ugc">WordPress Answers</a></li>
<li><a href="http://stackoverflow.com/users/821185/aman" rel="nofollow ugc">Aman</a> on <a href="http://stackoverflow.com/questions/6636701/limit-number-of-items-in-sortable-with-draggable-as-source/6663581#6663581" rel="nofollow ugc">Stack Overflow</a></li>
</ul>
Contributors Welcome
<ul>
<li>Submit a <a href="https://github.com/BFTrick/limit-widgets" rel="nofollow ugc">pull request on Github</a></li>
</ul>
Author
<ul>
<li><a href="http://www.patrickrauland.com" rel="nofollow ugc">Patrick Rauland</a></li>
<li><a href="http://www.ryanwelcher.com" rel="nofollow ugc">Ryan Welcher</a></li>
</ul>

Limit Widgets

A plugin for WordPress that limits the number of widgets in a sidebar.

Deepak Sharma

Multiple Sidebar Generator Plugin to easily create many custom sidebars. These sidebars can then select in the creation of a post / page / custom post type. We give an order, and select several at once.
Features:
<ul>
<li>Add Multi Widget Sidebar.</li>
<li>Select Different Sidebar in Page/ Post/Costom Posts</li>
<li>Display in Appearance Options.</li>
</ul>
<h4>Advanced Usage</h4>
If you want to assign custom sidebars to archive pages or replace multiple sidebars per page, this plugin likely won’t be the best solution. However it’s flexible enough to handle a wide range of page-based use cases. It can even be configured to work with Custom Post Types by adding a couple lines of code:
<pre><code>function myprefix_init() {
 add_post_type_support( '{{post_type}}', 'multiple-sidebar-generator' );
}
add_action( 'init', 'myprefix_init' );
</code></pre>

Multiple Sidebar Generator

Easily assign custom, widget-enabled sidebars to any page.

Limit Widgets vs Multiple Sidebar Generator