Code Markup makes it easy to include program code samples in your posts. You can even include HTML markup in the code sample.
GMeyshan gives your users an option check Gmail and Gmail for your domain right from your blog.
NG Primary Category allows WordPress users to define one category (termed primary category) that will be used to generate the post permalink, overriding WordPress choice by clicking a radio button next to the categories checkboxes.
NoIndex Follow Search prevents search engines from indexing your search result pages if people link to them.
Tiny Link creates an alternate TinyURL link to your article or post permalink.
Top Cat allows you to specify a main category for your posts.
Widgetbox Widget allows your users to use up to 9 Widgetbox widgets in their sidebars.