Need some widgets that are going to be compatible across your entire Multisite network? We’ve searched out some of the best and most useful ones for WordPress 3.0. If you know of some more that people should be using, drop a note in the comments. Also, if you’re a plugin author and your widgets are compatible with Multisite, make sure to include it in your plugin’s description, because it’s very helpful to WordPress users who are running Multisite networks.
Multisite Recent Posts Widget
This plugin creates a widget to show a list of the most recent posts across a WordPress Multisite installation. It shows the most recent post from each blog. This plugin is based on the work of many authors.
Author Avatars List
This plugin makes it easy to display lists of user avatars on your Multiuser blog. It also allows to insert single avatars for blog users or any email address into a post or page. The plugin is capable of showing users from the current blog, all blogs or a selection of blogs.
Diamond MultiSite Widgets
I recently tested the Diamond MultiSite Widgets plugin, a relatively new tool for displaying a blog list, recent posts and comments from your Multisite network. This plugin gives you three of the most commonly sought after Multisite widgets, so that you won’t have to install different plugins for each.
Advanced Theme Switcher
Advanced Theme Switcher allows BuddyPress and Multisite users the chance to switch between different themes. It can also be used for quickly profiling different theme designs on a BuddyPress or Multisite installation.
Multisite Global Search
Easily search through all blogs into your WordPress Multisite by post title, post content or post author. Entries on every site across your installation appear in search results immediately after publication. You’ll be able to receive results from your complete blog network, even sites you do not own or control.
As a network admin you need to be able to offer your users their own contact form for their sites. This plugin lets you do that. You can also set up multiple contact forms for different purposes. This simple and clean contact form provides a powerful range of configurable options with no coding or html knowledge required!
Super Widgets lets you feature posts in your sidebar. Select posts by Blog (multisite), individually, by Post Type, or by Tag/Category/Taxonomy. You have the option to display the Title, Featured Image, and Excerpt of a selected post or posts in your sidebar.
Theme Switch and Preview
This plugin allows admins or all visitors to switch the blog theme. It includes a restricted preview mode for your clients. It’s great for theme development as you can tweak the template online without breaking the site for visitors.
WP Social Blogroll
WP Social Blogroll adds a social blogroll to your blog. It will follow and display all updates of the sites in your blogroll. The plugin retrieves the date of the most recent feed-item of the bookmarked site. Best of all, it’s Multisite compatible.
GD Custom Posts And Taxonomies Tools
GD Custom Posts And Taxonomies Tools is a plugin that can be used to expand custom taxonomies and custom post types support. The plugin adds many tools including custom post types and taxonomies management and widget for taxonomies terms cloud. It’s also Multisite compatible and works with all supports all the latest features of WordPress 3.0.
Custom Taxonomies Menu Widget
This plugin is Multisite-compatible and creates a simple menu of your custom taxonomies and their associated terms. It’s ideal for sidebars. The widget is highly customizable via checkboxes to select which custom taxonomies and terms are displayed in the menu.
Recent Global Comments Widget
This plugin displays all the latest comments from across your entire WordPress Multisite network. The widget has several configurable options to choose from, including avatar size, number of comments, and number of characters in the content.
This plugin counts the number of users, categories, posts, comments, pages, links, tags, link-categories, words in posts, words in comments and words in pages. It is a high performing plugin with caching technology and customizable memory usage, as well as optional Ajax refresh.
Ad Squares Widget
Restrict Multisite Widgets
This plugin isn’t exactly a widget. Rather, it allows network admins to restrict which widgets are available on sites, similar to the way themes work. As a Super Admin, however, you can still activate widgets for individual sites without restrictions.