apriorit

This plugin allows you to more conveniently manage the creation of multiple sites within a multisite. 
Now you can create subsites and their pages with just one click.

Site Generator

This plugin allows managing creating multiple sites within a multisite more conveniently.

Ron Rennick

The WP/WPMU author link from the <code>the_author_posts_link()</code> template tag on the blog will link to the author’s buddypress member profile instead of the author’s posts page.
This plugin will only affect blogs where buddypress is activated sitewide. It will function the same in either the mu-plugins folder or in the plugins folder and activated sitewide.

BP Blog Author Link

This plugin changes the blog author links on a buddypress site to link to the author's buddypress member profile.

Site Generator vs BP Blog Author Link