ACSearch adds auto-completion to the WordPress search field.
Add to Any Subscribe Button lets readers subscribe to your blog using any feed reader.
Duplicate Sidebar Widgets allows a WordPress user to duplicate or copy sidebar widgets and use them on multiple sidebars or use the widgets more than once in the same sidebar.
WP Mail SMTP replaces the in-built wp_mail() function with a duplicate function which uses SMTP to localhost instead of PHP mail.
this.player is a a small player written in Flash that allows you to use simple tags to embed FLV, SWF and MP3 files into WordPress posts.