Scott Reilly

Easily define additional CSS (inline and/or by URL) to be added to all administration pages.

Allow multiple user accounts to be created, registered, and updated having the same email address.

Display the time according to your blog via an admin toolbar widget, a sidebar widget, and/or a template tag.

Configure SMTP mailing in WordPress, including support for sending email via SSL/TLS (such as Gmail).

Display Recent Posts, Recently Commented Posts, Recently Modified Posts, Random Posts, and other post listings using the post information of your choosing in an easily customizable manner. You can narrow post searches by specifying categories and/or authors, among other things.

Disable the built-in front-end search capabilities of WordPress.

A widget that can act as a duplicate of another widget (for synchronized use in another sidebar)

Force a single admin color scheme for all users of the site.

Use widgets, shortcodes, and/or template tags to easily retrieve and display custom field values for posts or pages.

Prevent broken shortcodes from appearing in posts and pages.

Template tags (for use in single.php) to create post navigation loop (previous to first post is last post; next/after last post is first post).

Removes the WordPress update nag that appears at the top of all admin pages when a new version of WordPress is released.

Conveniently close or open comments for a post or page with one click from the admin listing of posts.

Preserve formatting of code for display by preventing its modification by WordPress and other plugins while also retaining whitespace.

Adds links to 'All Drafts' and 'My Drafts' under Posts, Pages, and other custom post type sections in the admin menu.

Have "Remember Me" checked by default on the login page and configure how long a login is remembered. Or disable the feature altogether.

Reduce permalinks (category or post) that include entire hierarchy of categories to just having the lowest level category.

Prevent specified posts from being featured on the front page or in feeds, and from notifying external services of publication.

Add hover text (aka tooltips) to content in posts. Handy for providing explanations of names, terms, phrases, abbreviations, and acronyms.

Replace text with other text. Handy for creating shortcuts to common, lengthy, or frequently changing text/HTML, or for smilies.

Prevent WordPress from converting single and double quotation marks into their curly alternatives.