George Stephanis

Sure, WordPress has a widget for displaying your most recent posts, but what if you want to only display the posts from a single category in a widget, and not everything? This plugin Widget lets you set the title, category, and quantity of posts to display, then it kicks out a list of the most recent posts in that category.

Recent Category Posts Widget

This widget will let you display a list of the most recent posts in a single category in your sidebar.

PoseLab

A simple plugin that displays a list of all categories except those selected in widget preferences. Unlike other similar plugins like “Almost All Categories Widget”, Categories but exclude uses the latest version of WordPress Widget API, which is multi-widget, which lets you use the wigdet more than once. Mostly, I created the plugin to use it with the plugin “WPML” along with “Widget Logic” to use the same widget for each language.
This will allow you to create a custom category list which will show the categories you want, and will hide the categories you do not want. For example, say you have a particular category you don’t want to be displayed named “Announcements”. You can use this plugin to display all of your other categories, except the category “Announcements”. You are not limited to just excluding one category; you can exclude multiple categories.
Languages:
<ul>
<li>Spanish (es_ES) – <a href="http://poselab.com/" rel="nofollow ugc">PoseLab</a></li>
<li>French (fr_FR) – <a href="http://www.tradpress.fr/" rel="nofollow ugc">TradPress</a></li>
</ul>
If you have created your own language pack, or have an update of an existing one, you can <a href="mailto:javierpose@gmail.com" rel="nofollow ugc">send me</a> your gettext PO and MO so that I can bundle it into the Categories but exclude. You can download the latest POT file <a href="https://plugins.trac.wordpress.org/browser/categories-but-exclude-widget/trunk/categories-but-exclude.pot" rel="nofollow ugc">from here</a>.

Categories but exclude

Displays all categories except those selected in widget preferences.

Recent Category Posts Widget vs Categories but exclude