vip-governance-plugin by Automattic

Co-Authors Plus add-on pack with profile fields for popular social media services and the ability to allow attributing posts to their Authors when shared using Jetpack. Maintained by Automattic on GitHub, where it has earned 24 stars from the community.

Adding some LOLs to your server-side WordPress A/B testing. Plays nice with Batcache. Maintained by Automattic on GitHub, where it has earned 28 stars from the community.

Close the loop — Get feedback from readers on the documentation you write. Maintained by Automattic on GitHub, where it has earned 42 stars from the community.