Richard Venancio

This plugin used show a especific post, page or posts of one or any categories
Supose you have an area in your home with highlights, you can use this widgets to put the main posts, and don’t need to concern in copy text, links and other in de text-widget.

RVPagePosts

This plugin used show a especific post, page or posts of one or any categories

Justin Tadlock

The Query Posts widget was written to allow users that don’t know their way around PHP to easily show posts in any way they’d like. It’s like having a cool WordPress developer as a friend ready to do your bidding. Seriously.
The widget has over 40 options to choose from. You can list posts by category, tag, custom taxonomies, author, date, time, name, or anything you can imagine. You can choose to show the full content, excerpts, or even a simple list. You can order the posts in all sorts of ways. Oh, and you can even show pages.
This is the widget that keeps users out of the code and gives them the ability to display items on their site how they want.

Query Posts

A WordPress widget that gives you unlimited control over showing posts and pages.

RVPagePosts vs Query Posts