WordPress.org

BuddyPress helps you build any type of community website using WordPress, with member profiles, activity streams, user groups, messaging, and more.

By: John James Jacoby, Paul Gibbs, Boone Gorges, r-a-y, imath, @mercime, y others.

Increase your traffic, view your stats, speed up your site, and protect yourself from hackers with Jetpack.

By: Automattic, Adam Heckler, Andrew Duthie, Alex Kirk, allendav, alternatekev, y others.

A simple and easy way to test your theme for all the latest WordPress standards and practices. A great theme development tool!

By: Samuel Wood (Otto) y Simon Prosser.

Akismet comprueba los comentarios con el servicio web de Akismet para comprobar si son spam o no.

By: Matt Mullenweg, Ryan Boren, Andy Skelton, Michael Adams (mdawaffe), y others.

A very fast caching engine for WordPress that produces static html files.

By: Donncha O Caoimh, Automattic, y Brandon Kraft.

bbPress is forum software, made the WordPress way.

By: Matt Mullenweg, John James Jacoby, Jennifer M. Dodd, y Stephen Edgar.