Estos son los que considero los mejores plugins para WordPress y que utilizo:

1 Blog Cacher (Español)2.0.41 Blog Cacher es un plugin para WordPress que cachea tus páginas para incrementar la velocidad de respuesta y minimizar la carga del servidor.Por Javier García.
AddQuicktag1.5.3Allows you to easily add custom Quicktags to the editor. You can also export and import your Quicktags.Por Roel Meurders and Frank Bueltge.
Akismet2.2.1Akismet checks your comments against the Akismet web service to see if they look like spam or not. You need a WordPress.com API key to use it. You can review the spam it catches under “Comments.” To show off your Akismet stats just put <?php akismet_counter(); ?> in your template. See also: WP Stats plugin.Por Matt Mullenweg.
All in One SEO Pack1.4.6.15Out-of-the-box SEO for your WordPress blog.Por Michael Torbert.
cforms9.1cformsII offers unparalleled flexibility in deploying contact forms across your blog. Features include: comprehensive SPAM protection, Ajax support, Backup & Restore, Multi-Recipients, Role Manager support, Database tracking and many more. Please see the VERSION HISTORY for what’s new and current bugfixes.Por Oliver Seidel.
GeneralStats0.72Counts the number of users, categories, posts, comments, pages, links, tags, link-categories, words in posts, words in comments and words in pages.Por Bernhard Riedl.
Google XML Sitemaps3.1.0.1This plugin will generate a sitemaps.org compatible sitemap of your WordPress blog which is supported by Ask.com, Google, MSN Search and YAHOO. Configuration PagePor Arne Brachhold.
OpenSeach for WP1.0Integra opensearch en tu WordPressPor Andrés Nieto.
Paged Comments2.8 (2008-08-19)Breaks down comments into a number of pagesPor Keyvan Minoukadeh.
Sociable2.9.1Automatically add links on your posts to popular social bookmarking sites. Go to Options -> Sociable for setup.Por Joost de Valk.
Subscribe To Comments2.1.2Allows readers to receive notifications of new comments that are posted to an entry. Based on version 1 from ScriptygoddessPor Mark Jaquith.
Top Commentators Widget1.0Adds a sidebar widget to show the top commentators in your WP site. Adapted from Show Top Commentators plugin.Por Lorna Timbah (WebGrrrl.net).
WordPress Related Posts1.0Generate a related posts list via tags of WordPressPor Denis.
WP-Digg Style Paginator1.2.1Adds a digg style pagination to WordPress.Por Victor De la Rocha.
WP Auto Tagger1.3.2Automatically finds tags based on your post content.Por iDope.
WP SEO Master1.0Adds advanced search engine optimization capabilities to WordPress.Por EzBizNiz.Com.

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