shazdeh

A simple plugin to eliminate the need to “Network Activate” whenever a new theme is added to the network. This is a tiny time-saver for developers and theme testers who deal with lots of new themes regularly.

WPMU Allow All Themes

Automatically enable all themes available on your network to all websites in the network.

Emanuela Castorina

This plugin in a multisite installation shows the ID of the current site/blog in the admin bar menu. The ID of the current site/blog is linked to the site info page. 
It adds also a custom column with site id information inside the sites list table. 
It can be installed only on a multisite.

Wp Show Site ID

This plugin in a multisite installation shows the ID of the current site/blog.

WPMU Allow All Themes vs Wp Show Site ID