WP-PostRatings
Adds an AJAX rating system for your WordPress site's content.
Plugin Tag: postratings
WP Post Rating
Adds a star rating system to your posts, custom posts, and pages..
Pixelpost Importer
Import your PixelPost database in WordPress (categories, posts, comments, and ratings).
wp-postratings-my
Shows users their WP-PostRatings and allows filters.