Syndicate Press lets you include RSS, RDF or Atom feeds directly in your WordPress posts, pages, widgets or theme.
Better shortcodes. Embed HTML into your blog's posts, pages, titles, comments, and widgets with this powerful, easy-to-use plugin.
WordPress plugin to automatically convert BBCodes to HTML tags from your post contents.
e107 import plugin for WordPress.
Easily post source code such as PHP or HTML and display it in a styled box.
Wiki on the dashboard for multiple autors.