Gigaom

Gigaom Content Stats - stats about posts and authors

Shortcode pullquotes, blockquotes, and inline quotes.

Adds copyright lines & UTM codes to feed articles

Clean up rogue HTML in post content

Trending posts widget

Adds mechanism to track when terms are added.

Inject widgets into post content

Open Source graphing library plugin

Provides related content widgets

Contact form shortcode.

Allows locking of all edit operations for non-admins

Provides a conditional display widget.

Provides a hook-able message area widget for...messages

UI libraries for use across a number of plugins and themes that we develop

Plugin for adding time pickers and timezone picker to WordPress

Plugin used to cross post between properties

Determines popular terms/posts by taxonomy

A widget to show information about the author and improve the SEO value of the page.

Features for synchronizing WP data with MailChimp

alerts user in the post edit page when the post title length exceeds some configured character count