WordPress.org

Adds a more advanced paging navigation interface.

By: Lester Chan and scribu.

Allows you to regenerate your thumbnails after changing the thumbnail sizes.

By: Alex Mills (Viper007Bond).

Build responsive page layouts using the widgets you know and love using this simple drag and drop page builder.

By: Greg Priday and braam-genis.

WooCommerce is a powerful, extendable eCommerce plugin that helps you sell anything. Beautifully.

By: Automattic, Mike Jolley, James Koster, Claudio Sanches, Justin Shreve, and others.

Really Simple CAPTCHA is a CAPTCHA module intended to be called from other plugins. It is originally created for my Contact Form 7 plugin.

By: Takayuki Miyoshi.

Modern two-factor that people love to use: strong authentication without passwords or tokens; single sign on/off; magical login experience.

By: Dave Ross, Jesse Pollak, Andrew Russell, and inthylight.

Improve your WordPress SEO: Write better content and have a fully optimized WordPress site using the Yoast SEO plugin.

By: yoast, Joost de Valk, tacoverdo, Omar Reiss, Anton Timmermans, and Jip Moors.

Secure your website with the most comprehensive WordPress security plugin. Firewall, malware scan, blocking, live traffic, login security & more.

By: Wordfence.

This plugin will generate a special XML sitemap which will help search engines to better index your blog.

By: Arne Brachhold.

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

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

Search Engine (SEO) & Performance Optimization (WPO) via caching. Integrated caching: CDN, Minify, Page, Object, Fragment, Database support.

By: Frederick Townes.

Clone posts and pages.

By: Lopo.

Customise WordPress with powerful, professional and intuitive fields

By: elliotcondon.

The most popular WordPress gallery plugin and one of the most popular plugins of all time with over 16 million downloads.

By: photocrati and imagely.

The one plugin you need for stats, related posts, search engine optimization, social sharing, protection, backups, speed, and email list management.

By: Automattic, adamkheckler, Andrew Duthie, Alex Kirk, allendav, alternatekev, and others.

Backup and restoration made easy. Complete backups; manual or scheduled (backup to S3, Dropbox, Google Drive, Rackspace, FTP, SFTP, email + others).

By: Backup with UpdraftPlus, David Anderson, DNutbourne, aporter, and snightingale.

This is not just a plugin, it symbolizes the hope and enthusiasm of an entire generation summed up in two words sung most famously by Louis Armstrong.

By: Matt Mullenweg.

The original SEO plugin for WordPress, downloaded over 30,000,000 times since 2007.

By: Michael Torbert, Steve Mortiboy, Dougal Campbell, Peter Baylies, and others.

Just another contact form plugin. Simple but flexible.

By: Takayuki Miyoshi.

Import posts, pages, comments, custom fields, categories, tags and more from a WordPress export file.

By: WordPress.org.

Connect Google Analytics with WordPress by adding your Google Analytics tracking code. Get the stats that matter.

By: chriscct7 and Syed Balkhi.

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

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

Extends and enhances TinyMCE, the WordPress Visual Editor.

By: Andrew Ozz.

Displays Google Analytics stats in your WordPress Dashboard. Inserts the latest Google Analytics tracking code in your pages.

By: Alin Marcu.

Duplicate, clone, backup, move and transfer an entire site from one location to another.

By: corylamleorg and Bob Riley.

Allows administrators to globally disable comments on their site. Comments can be disabled according to post type. Multisite friendly. Provides tool t

By: Samir Shah.

Multibyte functionality enhancement for the WordPress Japanese package.

By: Seisuke Kuraishi (tenpura).

The visual editor widget for WordPress.

By: Black Studio, Marco Chiesi, and Francesco Canovi.

A collection of all widgets, neatly bundled into a single plugin. It's also a framework to code your own widgets on top of.

By: Greg Priday and braam-genis.

Take the guesswork out of WordPress security. iThemes Security offers 30+ ways to lock down WordPress in an easy-to-use WordPress security plugin.

By: iThemes, Chris Jean, gerroald, and Matt Danner.