This plugin blocks everyone but the admin from accessing the WordPresss Admin
A simple front end post form for all users, and as a bonus the ability to list subpages.
Adds a widget that adds "drop zones" to your site front end. Then you can drop posts to the zones and they will stay, magic!
Add edit buttons to the front end of your website. The buttons makes it easy to changing the order of a pages, adding pages, and editing pages.
Provide your visitors a Flash equivalent of your website / Convert your WordPress blog into a Flash application.