EXIF Columns adds columns to the Media Library for EXIF metadata.
Post Meta Inspector is a quick and easy way to see post meta associated with any given post.
Cookies for Comments sets a cookie on a random URL that is then checked when a comment is posted. If the cookie is missing the comment is marked as spam.
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.
Markdown on Save Improved processes your post with Markdown unless you tell it not to.
Rewrite Rules Inspector is a straightforward WordPress admin tool for inspecting your rewrite rules.
Safe Report Comments gives your visitors the ability to report a comment as inappropriate.
Watu allows you to create exams with unlimited questions and answers, and define grades based on collected points.