WP Ajax Edit Comments allows users and admins alike to edit comments on a post. User’s can edit their own comments for a period specified by the admin, and admins can edit all post comments.

Preview Post Navigation restores the “preview” and “edit” links that were removed from the WordPress 2.1x series back into the editor.

CSS Hijack Prevention filters out CSS code in your comments to protect your blog from being hijacked using CSS.

IP 2 Nation Longitude and Latitude Update implements 2 new functions to obtain the Longitude and Latitude of the Country.

Sticky Post shows the designated post on the top of every post without modifying your current theme.

Yearly Repeater plugin is a boon when you need to repeat the a single post every year on a particular day. You can achieve this by editing timestamp manually, but using this plugin you can automate this task.

Comments Preview allows visitors to preview their comment before submitting.

New Plugin Thingy allows you to create a plugin right from within WordPress Admin menu itself.