Allows you to set a custom timeout between the registration of two IP addresses.
Records and displays the most users/guests or total users online at one time.
Automatically zaps reports about a deleted post.
Allows you to link to one or more categories
Masks unverified users.
Enables Piclens immersive viewing for images in a topic. Should also work for other applications that use Media RSS (MRSS).
Adds admin modifyable input fields to the user profiles.
Adds the Mibbit IRC chat service.
Adds a list of smilies above the post, quick post, edit and signature forms.
A syntax highlighter that makes use of GeSHi
Add an 'Upgrade extension' link to the extension overview
Disallows new users (specifiable amount of posts) to post a specifiable amount of links. These settings can be found under Settings > Features > 3. Topic and post content.