RSS Not Before provides the ability to remove posts from the rss feeds prior to a given date.
Grimp - PHP allows you to use php code in pages and posts using the usual php markup (<?php PHP_CODE ?>).
This plugin is including the Flattr button in your RSS/Atom feed.
There are some more options to extend Flattr functionality like optional autosubmit
Envie o conteúdo de seu blog para a revista eletrônica Blog Reader.
Send the content of your blog to the ipad online magazine Blog Reader
Simple, efficient, and flexible raw html support via shortcodes.
Allow users to swipe to see previous/next posts in iPad.
Plugin for displaying various lists of posts, comments, etc.
Put favourite posts on sidebar.
Automatically publishes a status on your twitter account when a post has been published, modified or commented by a user.
Allows user to specify All in One SEO Pack details while posting from Windows Live Writer.
This plugin creates a glossary for your WordPress powered site.
Order posts using a simple drag and drop ui.
This plugin allows you to list any number of related posts from the same category as the current post. You can also randomise these results.
Add custom color tag to your posts.
RSS link for this tag.