ImageMapper allows you to create interactive and visual image maps with the Visual editor.
WP-Elasticsearch replaces the default WordPress search with ElasticSearch.
Bad Behavior complements other link spam solutions by acting as a gatekeeper, preventing spammers from ever delivering their junk, and in many cases, from ever reading your site in the first place.
Batcache uses Memcached to store and serve rendered pages.
bbPress is forum software with a twist from the creators of WordPress, available for the first time ever as a plugin.
BuddyPress lets users register on your site and start creating profiles, posting messages, making connections, creating and interacting in groups and much more. It’s a social network in a box.
Facebook makes your site deeply social by integrating functionality from Facebook.
Fast Secure Contact Form lets your visitors send you a quick e-mail message and blocks all common spammer tactics. Additionally, the plugin has a multi-form feature, optional extra fields, and an option to redirect visitors to any URL after the message is sent.
Hotfix provides unofficial fixes for selected WordPress bugs, so you don’t have to wait for the next WordPress core release.
HyperDB is an advanced database class that supports replication, failover, load balancing, and partitioning.
Q2W3 Fixed Widget fixes positioning of the selected widgets when the page is scrolled down.
Theme-Check allows you to run checks on the current theme before uploading to WordPress. This plugin uses the same API and is kept more or less in sync with the WordPress.org uploader tool.
Watu allows you to create exams with unlimited questions and answers, and define grades based on collected points.