WPMU Global Search
Adds the ability to search through blogs into your WordPress MU installation.
Plugin tag: wpmu
WPMU Admin Interface Language
Lets WPMU user to select language in backend administration panel.
WPMU Allow All Themes
Automatically enable all themes available on your network to all websites in the network.
Multisite Enhancer
This plugins enhances the multisite network dashboard
Site Generator
This plugin allows managing creating multiple sites within a multisite more conveniently.