"Tweet2Download allows a wordpress blog to require a tweet and a follow in exchange for the downloads or article parts available on the blog. If you have a blog that provides downloads, this plugin is the perfect twitter marketing tool for you. Tweet2Download allows you to require a tweet and a follow in exchange for a download or a content snippet on your blog. It effectively asks your users to "pay" with a tweet for free content on your blog, making it a very powerfull viral marketing tool."

"Uji Countdown allows you to display a countdown on your post or page. The easiest way to place your full customizable HTML5 Countdown Timer. Features: HTML5 features No flash, only javascript! Customize of colors for text and background Customize boxes color Enable animation Set the texts for date, time Create unlimited styles Simple using shortcode Multilanguage support for date Add countdown timers from Widgets area"

"Sends a list of subscribers an email notification when new posts are published to your blog Subscribe2 provides a comprehensive subscription management and email notification system for WordPress blogs that sends email notifications to a list of subscribers when you publish new content to your blog. Email Notifications can be sent on a per-post basis or periodically in a Digest email. Additionally, certain categories can be excluded from inclusion in the notification and posts can be excluded on an individual basis by setting a custom field."

"NextGEN Gallery is the most popular WordPress gallery plugin, and one of the most popular WordPress plugins of all time, with over 6 million downloads. It provides a powerful engine for uploading and managing galleries of images, with the ability to batch upload, import meta data, add/delete/rearrange/sort images, edit thumbnails, group galleries into albums, and more. It also provides two front-end display styles (slideshows and thumbnail galleries), both of which come with a wide array of options for controlling size, style, timing, transitions, controls, lightbox effects, and more."

"Dynamic Widgets gives you full control on which pages your widgets will appear. It lets you dynamically show or hide widgets on WordPress pages by setting conditional logic rules with just a few mouse clicks. No knowledge of PHP required. No fiddling around with conditional tags. You can set conditional rules by Role, Dates, Browser, Theme Template, Language (WPML or QTranslate), URL, for the Homepage, Single Posts, Attachments, Pages, Authors, Categories, Tags, Archives, Error Page, Search Page, Custom Post Types, Custom Post Type Archives, Custom Taxonomies in Custom Post Types, Custom Taxonomies Archives, WPEC/WPSC Categories, BuddyPress Components, BuddyPress Groups, Pods pages and bbPress."

"A simple image widget that uses the native WordPress media manager to add image widgets to your site."

"This plugin allow create custom image sizes for your site. Override your theme sizes directly on the media option page. You can regenerate all the sizes you have just created and choose which one you wanted to regenerate. You can now get all the code to copy and paste to your function theme file. Now you can use the generated sizes directly into your posts and insert images at the right size ! Now you choose if you want display the size in the post insert image. Now you can regenerate the images one by one in the 'Medias' general pane. Now you can regenerate the images by bulk action in the 'Medias' general pane. Now you can regenerate the image sizes on single attachment edit page."

"Regenerate Thumbnails allows you to regenerate the thumbnails for your image attachments. This is very handy if you've changed any of your thumbnail dimensions (via Settings -> Media) after previously uploading images or have changed to a theme with different featured post image dimensions."

"A calendar system with month, week, day, agenda views; upcoming events widget, color-coded categories, recurrence, and import/export of .ics feeds. "

"This test will list MX records for a domain in priority order. The MX lookup is done directly against the domain's authoritative name server, so changes to MX Records should show up instantly. You can click Diagnostics , which will connect to the mail server, verify reverse DNS records, perform a simple Open Relay check and measure response time performance. You may also check each MX record (IP Address) against 100 DNS based blacklists . (Commonly called RBLs, DNSBLs) "

"YSlow analyzes web pages and suggests ways to improve their performance based on a set of rules for high performance web pages. Feature highlights: Grades web page based on one of three predefined ruleset or a user-defined ruleset; It offers suggestions for improving the page's performance; Summarizes the page's components; Displays statistics about the page; Provides tools for performance analysis, including Smush.it™ and JSLint."

"GTmetrix can help you develop a faster, more efficient, and all-around improved website experience for your users."

"plugins para eCommerce, plugins para monetizar productos intangibles como contenido privado, ebooks; modelos de negocio basados en subscripción, cómo crear una plataforma de afiliación o plugins para promocionar productos de afiliados; gestión de eventos, donaciones y subastas también son temáticas cubiertas por este artículo."

"The Duplicator plugin gives WordPress Administrators and Developers the ability to migrate/clone a site from one location to another location. First create a package, download it and install. No need to change your settings and re-run import/export scripts. The plugin also serves as a simple backup utility. The Duplicator also supports both serialized and base64 serialized string replacement."

"The world's easiest way to sell digital downloads through WordPress - for free"

"WP Migrate DB exports your database as a MySQL data dump (much like phpMyAdmin), does a find and replace on URLs and file paths, then allows you to save it to your computer. It is perfect for developers who develop locally and need to move their WordPress site to a staging or production server."

"This plugin migrates sections, categories, posts, images, medias and tags from Joomla to WordPress"

"Cyclone Slider follows the keep it simple mantra. It leverages wordpress' built-in features. It uses custom post for the slideshow, custom fields to store settings, and media uploader for the images. Its simple yet flexible."

"WPtouch automatically transforms your WordPress website for mobile devices, complete with ajax loading articles and smooth effects when viewed from popular mobile web browsing devices like the iPhone, iPod touch, Android mobile phones, BlackBerry OS6+ mobile devices, and more!"

"iLightBox allows you to easily create the most beautiful responsive overlay windows using the jQuery JavaScript library. By combining support for a wide range of media with gorgeous skins and a user-friendly API, iLightBox aims to push the Lightbox concept as far as possible."