reneade

With this extension for the WordPress plugin PostLists it is possible to add next-/prev- navigation links to a PostLists list.
The following placeholders can be used to create the links in the before- and after- fields of the list configuration: 
%ple_navigation_next_link% will get replaced to the next-link you defined in the “navigation next link” field of your list (you need to configure that field and can use %navigation_next_url% there), if the configured number of posts to display was reached. 
%ple_navigation_prev_link% will get replaced to the prev-link you defined in the “navigation prev link” field of your list if the prev-link is really needed (you need to configure that field and can use %navigation_prev_url% there). 
%ple_navigation_variable% will get replaced to the the name of the get-variable to overwrite the offset of this list. 
%ple_navigation_next_offset% will get replaced to the offset to get the posts after the last post of this list. 
%ple_navigation_next_url% will get replaced to the url to this list showing the posts after the last post of this list. 
%ple_navigation_prev_offset% will get replaced to the offset to get the posts before the first post of this list. 
%ple_navigation_prev_url% will get replaced to the url to this list showing the posts before the first post of this list.
Plugin Website: http://www.rene-ade.de/inhalte/wordpress-plugin-postlists-extension-navigation.html
Many thanks, to Marcel Goor (http://www.mediaculture.nl), for doing the AJAX-Part that is integrated in Version 3!
<h3>PostLists</h3>
This Plugin “ple-navigation” is a PostLists-Extension: You need the WordPress plugin “PostLists” to use it!
You can download the WordPress Plugin “PostLists” here: 
http://www.rene-ade.de/inhalte/wordpress-plugin-postlists.html
PostLists is a Plugin for WordPress to add configurable dynamic lists of posts via simple placeholders to a page, post or to your sidebar. PostLists itself can also be extended via other WordPress Plugins (called PostLists Extensions) to add further functionallity to PostLists.
<h3>PostLists Extensions</h3>
You will find a list of all know extensions for the WordPress Plugin PostLists here: 
http://www.rene-ade.de/inhalte/wordpress-plugin-postlists-extensions.html

PostLists-Extension Navigation

With this extension for the WordPress plugin PostLists it is possible to add next-/prev- navigation links to a PostLists list. AJAX-Support.

Ross Cornell

This plugin adds a simple widget that allows you to display a number of recent blog posts from a specific category. You have the options to choose a title, category, number of posts and whether or not to show the post date. The posts will be ordered by date just like the default Recent Posts widget included with WordPress.

very easy to use

Very usefull

Just like the default Recent Posts widget except you can choose a category to pull posts from.

PostLists-Extension Navigation vs Recent Posts by Category Widget