WordPress.org

Author: Nicolas Kuttler

This plugin has three basic configurations:

1. Only admin: This is useful for theme developers and to preview themes on live sites.
2. Only with passkey: Send your clients preview links. They won't need an account on your blog for this to work.
3. Everybody: Theme switching for everybody.

The plugin is great for theme development as you can tweak the template online without breaking stuff for visitors. You can also use it for presentations, to show off various templates. There is a widget and a theme cloud shortcode to make this easier.

Why I wrote this? I posted a technique on how to use different CSS styles for logged in users, but I needed something more powerful.

My plugins

Better tag cloud: I was pretty unhappy with the default WordPress tag cloud widget. This one is more powerful and offers a list HTML markup that is consistent with most other widgets.
Theme switch: I like to tweak my main theme that I use on a variety of blogs. If you have ever done this you know how annoying it can be to break things for visitors of your blog. This plugin allows you to use a different theme than the one used for your visitors when you are logged in.
Zero Conf Mail: Simple mail contact form, the way I like it. No ajax, no bloat. No configuration necessary, but possible.
Move WordPress comments: This plugin adds a small form to every comment on your blog. The form is only added for admins and allows you to move comments to a different post/page and to fix comment threading.
Delete Pending Comments: This is a plugin that lets you delete all pending comments at once. Useful for spam victims.
Snow and more: This one lets you see snowflakes, leaves, raindrops, balloons or custom images fall down or float upwards on your blog.
Fireworks: The name says it all, see fireworks on your blog!
Rhyming widget: I wrote a little online rhyming dictionary. This is a widget to search it directly from one of your sidebars.