Sometimes, links get broken. Most likely many of your blog posts contain links. It is almost inevitable that over time some of them will lead to a “404 Not Found” error page. Obviously you don’t want your readers to be annoyed by clicking a link that leads nowhere. You can check the links yourself but that might be quite a task if you have a lot of posts. You could use your webserver’s stats but that only works for local links.

Broken Link Checker is a plugin for WordPress that will check your posts (and pages), looking for broken links, and notifies you on the Dashboard if any problems are found. By default all old posts/links are re-checked every 72 hours, or you can set a different time period.

There are several buttons for each broken link – “Details” shows more info about why the link is considered “broken”, “Edit Post” does exactly what it says and “Discard” will remove the message about a broken link, but not the link itself (so it will show up again later unless you fix it). Use “Unlink” to actually remove the link from the post. If references to missing images are found, they will be listed along with the links, with “[image]” in place of link text.

Pricing: Free
Requirements: WordPress 2.0.2+
Source: http://wordpress.org/extend/plugins/broken-link-checker/

Featured Content Gallery is a WordPress plugin that creates an automated rotating image gallery of your posts or pages for use anywhere within your theme.

Completely customizable, the Featured Content Gallery is very easy to integrate. Choose to automate the plugin and simply add a custom field to each post or page you want to display and the gallery will show the image, an auto-generated thumbnail in the upper carousel, and the title and first few lines of page/post text. Advanced options allow inclusion of custom thumbnail images, custom text, and custom gallery styles and transitions.

Pricing: Free
Requirements: WordPress 2.7+
Source: http://www.featuredcontentgallery.com/

FlippingBook Wordpress Gallery is an excellent way of working with images in blogs. You download photos, and the plugin creates a small photo gallery out of them. If you need to post several pictures, you don’t have to make large posts. Being joint together, pictures can be put in a beautiful album-book and don’t take up much space.

It’s very convenient to look through the pictures, leafing through the pages. You just have to double-click to print images out. This is a real interactive book which is nice and easy to use when you turn its pages.

Pricing: €0 – €299
Requirements: WordPress 2.5+
Source: http://pageflipgallery.com/

TDO Mini Forms plugin allows you to add highly customisable forms that work with your Theme to your website that allows non-registered users and/or subscribers (also configurable) to submit posts. The posts are kept in “draft” until an admin can publish them (also configurable).

It can optionally use Akismet to check if submissions are spam. TDO Mini Forms can be used to create “outside-the-box” uses for Wordpress, from Contact Managers, Ad Managers, Collaborate Image Sites, Submit Links, etc.

The plugin provides an extensive moderation view so administrators and editors can see posts awaiting approval and publish or delete them. Administrators can also ban specific users and IPs from using the form. Registered users have access to a “Your Submissions” page which lists their current submissions awaiting approval and links to their approved submissions as well.

Pricing: Free
Requirements: WordPress 2.7+
Source: http://wordpress.org/extend/plugins/tdo-mini-forms/

WPML is a WordPress plugin that can turn any WordPress or WordPressMU site into a full featured multilingual content management system. WPMU can do this without any hacks and without breaking anything.

It can be configured to serve different subdomains or different sites in folders. Each blog in the WPMU install will serve a different language. Each blog will run in a single language and function as a standard WordPress blog.

You will be able to select the language for different pages, posts, categories and tags. Add translations to everything. Run your site from a single domain with language folders (example.com, example.com/es, example.com/de) or from different domains. You can also select your admin language.

Pricing: Free
Requirements: WordPress 2.6+ and requires PHP5.
Source: http://wpml.org/

MobilePress is a WordPress plugin that will render your WordPress blog on mobile handsets, with the ability to use customized themes. The plugin also allows specific themes for specific devices / mobile browsers, such as iPhone, Opera Mini, Windows CE Mobile and other generic handset browsers.

The plugin also allows WordPress theme developers to create custom mobile themes for WordPress blogs using the MobilePress plugin. Therefore, theme designers can create specific iPhone themes or generic themes.

MobilePress also features Mobile SEO which detects Google and Yahoo mobile search bots. These mobile search bots will see the mobile version of you blog which allows your blog to optimized and indexed on Google and Yahoo mobile search.

Pricing: Free
Requirements: -
Source: http://mobilepress.co.za/

Redirection is a WordPress plugin to manage 301 redirections, keep track of 404 errors, and generally tidy up any loose ends your site may have. This is particularly useful if you are migrating pages from an old website, or are changing the directory of your WordPress installation.

Redirection uses three core concepts: Modules, Groups and Redirects. A module consists of many groups, and each group consists of many redirections. A module determines how the redirections will be used, and a group allows you to separate redirections into logical units. A redirection represents an action performed when a particular URL is accessed.

Pricing: Free
Requirements: WordPress 2.6+
Source: http://urbangiraffe.com/plugins/redirection/

The WP e-Commerce plugin is a fully integrated shopping cart application suitable for selling your products, services, and or fees online. WP e-Commerce makes it easy for you to accept payments online. WP e-Commerce integrates with Google Checkout, Paypal, Authorize.net, Payment Express and many other trusted payment processors.

You will install WP e-Commerce in minutes. Just like all well architectured plugins WP e-Commerce bolts right on. You simply download the plugin, copy it to your Plugins folder and activate it via your admin panel.

Pricing: Free
Requirements: WordPress 2.5+
Source: http://www.instinct.co.nz/e-commerce/

The WordPress Simple Paypal Shopping Cart is a very easy to use plugin that allows you to sell products or services online in one click from your WordPress blog. It lets you add the ‘Add to Cart’ button anywhere on any post or page. This plugin also allows you to add the shopping cart anywhere in a post or page or sidebar easily. The shopping cart shows the user what they currently have in the cart and allows them to add or remove items.

After the Payment has been processed by PayPal the customer will be redirected to a page (you can set your desired target page URL from the options menu of this plugin) where the customer can see download link of the product or instructions or a simple thank you etc.

Pricing: Free
Requirements: WordPress 2.5+
Source: http://www.tipsandtricks-hq.com/wordpress-simple-paypal-shopping…

Many blogs out there can only produce a couple articles a week while their visitors ask for loads more. It’s sometimes a good idea to add related articles from other blogs to your sidebar. Adding them manually takes lots of time we don’t have.

With this new Community News plugin you allow your visitors to add articles to the sidebar. Complete with moderation panel and a settings page, you can sit back while you have full control about the look and articles that being posted.

Pricing: Free
Requirements: -
Source: http://www.frank-verhoeven.com/wordpress-plugin-fv-community-news/