3mergingdesign

The WordPress Pages From Category Plugin will allow you to add page links to your Sidebar.
What you can customize:
<ol>
<li>Give the plugin a title.</li>
<li>Choose which category of pages you want to display.</li>
<li>Choose how many page links you want to display on the page. There is a limit of 20 links.</li>
<li>How do you want the pages to be sorted in the list? You can choose Date Posted, Date Modified,…etc.</li>
<li>How do you want the pages to be listed? Highest to Lowest or Lowest to Highest?</li>
<li>If you want to exclude a page just enter the page ID.</li>
<li>Show RSS feeds</li>
</ol>

Pages From Category

Allows you to add a widget with some number of most recent pages

Marzio Carro

Adds categories and tags functionality for your pages.
This plugin addsthe ‘post_tag’ and the ‘category’ taxonomies, which are the names of the existing taxonomies used for tags and categories the Post type ‘page’.
This enables the categories metabox and the tags metabox in the New or Edit Page interface.
The plugin has no settings, does not alter the database and only uses hooks to 
achieve it’s goal. It works perfectly fine with Multisite installations.
This plugin WILL NOT add any display of categories or tags to your template files.
Plugin’s website: <a href="http://technotes.marziocarro.com/category/wordpress-plugins/" rel="nofollow ugc">http://technotes.marziocarro.com/category/wordpress-plugins/</a>
Author’s website: <a href="http://technotes.marziocarro.com/" rel="nofollow ugc">http://technotes.marziocarro.com/</a>

Category Tag Pages

Wonderful functionality

Yes, it works. Uses very few lines of code and it's a simple and safe solution to have categories and tags in pages.

It works

Adds categories and tags functionality for your pages.

Pages From Category vs Category Tag Pages