1. Broken Link CheckerThis plugin will check your posts, comments and other content for broken links and missing images, and notify you if any are found.
2. Wp P3 ProfilerSee which plugins are slowing down your site. This plugin creates a performance report for your site.
4. shared-uiNPM package for internal use in WPMU DEV plugins.
7. wikiCollaborate, discuss, crowdsource and create better content with Wiki Pro for WordPress, Multisite and BuddyPress.
10. ultimate-facebookUltimate Facebook - The complete solution for seamless Facebook integration and mirrored social sharing on WordPress