Adadaa

This plugin creates four (4) seperate RSS 2.0 feeds from posts, comments, pages, and one combined [posts & pages] across all blogs on your site.
Works both on WPMS upto 4.9.20
This will skip the first comment and page of a blog; also will not include private, spam, mature and deleted blogs.
Both Subdirectory and VHOST installations are now supported. Thanks to DaryL.
Features:
<ul>
<li>Generates sitewide combined [posts & pages] feed</li>
<li>Generates sitewide posts feed</li>
<li>Generates sitewide comments feed</li>
<li>Generates sitewide pages feed</li>
<li>Client-side caching via ETag headers</li>
<li>Admin screen to configure options</li>
<li>Compliance with xhtml and xml standards & many more</li>
</ul>
For more explanation and to leave any suggestions to improve or bugs, please visit on my blog : <a href="http://1uthavi.adadaa.com/ada-wpmu-sitewide-feed-plugin/" rel="nofollow ugc">Ada WPMS Sitewide Feed</a>
<h3>Usage</h3>
Compatible with WP Multi-Network plugin . You can have different blog ID than 1 to trigger the full feed.
<h3>To Do</h3>
<ul>
<li>Comply fully for language translation</li>
<li>Exclude blogs by ID</li>
<li>Enable/disable individual sitewide feeds</li>
<li>Option to include the blog title in the post title shown in the feed</li>
<li>Consider changing the function ada_get_avatar_url() to use the core hook get_avatar(). So it can work with WPMUDEV’s Avatars for Multisite.</li>
<li>Option to exclude by post types</li>
</ul>

Ada WPMS Sitewide Feed

Creates four rss 2.0 feeds showing recent posts, comments, pages, and one combined [posts and pages] from all blogs.  Works both on WPMS, and WPMU

Adds a sidebar widget to let you display new/updated/active blogs from WordPress Multi-Site/ WordPressMU.
Features:
<ul>
<li>Shows Updated, New, Active sites/blogs in 3 tabs with the option to hide/sort individually.</li>
<li>Option to set the number of sites/blogs to display</li>
<li>Option to show/hide tagline</li>
<li>Option to show/hide Avatar with different sizes</li>
</ul>
Tamil translation file is included.
Please leave any suggestions to improve or bugs on my blog : <a href="http://adadaa.net/1uthavi/ada-blogs-sites-status/" rel="nofollow ugc">Ada Blogs Status</a>

Ada Blogs Status

Adds a sidebar widget to let you display new/updated/active blogs from WordPress Multi-Site/ WordPressMU.

Ada WPMS Sitewide Feed vs Ada Blogs Status