Verse Links searches for Bible verse references within blog posts or comments and links them to a reference site of your choice.
WP-Piwik adds a Piwik stats site to your dashboard.
BackWPup allows you to backup your WordPress database, files, and more.
Cleverness To-Do List integrates a customizable, multi-featured to-do list.
Fast Secure Contact Form lets your visitors send you a quick e-mail message and blocks all common spammer tactics. Additionally, the plugin has a multi-form feature, optional extra fields, and an option to redirect visitors to any URL after the message is sent.
OSM displays maps in your WordPress blog using the OpenLayers technology.
Widget Logic Visual lets you control on which pages widgets appear using conditional tags.