Plugins

Lets WPMU user to select language in backend administration panel.

This plugin protects your WPMU signup process against spambots with a simple math question.

This plugin provides a way for site admins to allow blog creators more options for blog name (less restrictive than built-in defaults).

Integrates μcaptcha with WordPress, including comment and login/registration forms.

WPMU Custom CSS is a plugin for wordpress mu that helps bloggers to edit their theme style securely. Just like wordpress.com custom css paid upgrade.

Clean up a single site in a WP network, by removing all posts, comments, terms and media files. A clean slate for the site.

Lets site admins define which blogs a user should automatically become a member of, and with what role. Multiple blogs supported.

An addon on WPMU Infinite Seo, Fixes bugs with creating Meta-Description, and makes it working with multibyte.

A widget that allows for a custom tag cloud and creates a shortcode for using a tag cloud on a page.

A widget that allows you to pull recent posts from another blog within the WPMU Site.