WordPress.org

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

By: Automatticsa, ugAdam Hecklersa, ugAndrew Duthiesa, ugAlex Kirksa, ugallendavsa, ugalternatekev, and others.

bbPress is forum software, made the WordPress way.

By: Matt Mullenwegsa, ugJohn James Jacobysa, ugJennifer M. Dodd, and Stephen Edgar.

BuddyPress helps site builders and WordPress developers add community features to their websites, with user profile fields, activity streams, messagin

By: John James Jacobysa, ugPaul Gibbssa, ugBoone Gorgessa, ugr-a-ysa, ugimathsa, ug@mercime, and others.

Akismet checks your comments against the Akismet Web service to see if they look like spam or not.

By: Matt Mullenwegsa, ugRyan Borensa, ugAndy Skeltonsa, ugMichael Adams (mdawaffe), and 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), and Simon Prosser.

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

By: Donncha O Caoimhsa, ugAutomattic, and Brandon Kraft.