Cart66 Lite

Cart66 Lite is a WordPress ecommerce plugin that allows you to process credit cards using Mijireh and sell digital products with Amazon S3 integration. You can sell physical products and services using the plugin along with managing orders and promotions. The plugin can calculate tax by state, zip code, etc. You can sell internationally and set the currency. E-mail receipts can be customized and there is affiliate platform integration.

The paid version of the plugin gets you premium support, community forums, early access to Cart66 new releases, tutorial videos, add-ons, and Cart66 powered themes (coming soon).

Ecwid

Ecwid is a free WordPress plugin that has a full-featured shopping cart and e-commerce solution. It can easily be added to your WordPress blog or Facebook profile. It has AJAX drag-and-drop, multiple store support, social network integration, etc.

eShop

eShop is a shopping cart plugin for WordPress. It works with WordPress pages and posts. Customers can sign up for your website and products have multiple options. Other features include the ability to download sales data, order handling, user configurable e-mail templates, basic stock control, out of stock messages, Google Base Data creation, WPMU/Multisite compatible, Merchant gateways (Authorize.net, PayPal, Payson, Webtopay, iDEAL), sales tax, WP Affiliate support, etc.

MarketPress – Starting at $17

MarketPress is an ecommerce / shopping cart plugin that has multiple payment gateways, fully internationalized, shipping/coupon/Google Analytics eCommerce/unlimited production variation support, and the ability to sell real objects or digital downloads. MarketPress has a gallery of compatible themes.

Shopp – $55

Shopp is a plugin that has a customizable storefront and shopping cart feature. The plugin has administration tools, widgets, shortcodes, custom menus, post types, and taxonomy support. The core plugin also has integration with some of the most popular processing services like PayPal, Google Wallet, and 2Checkout.com. The plugin also has payment gateways to real-time shipping rates.

ShopperPress – $79

ShopperPress is an SEO friendly premium WordPress theme that can turn any WordPress blog into a fully functional online store with shopping cart functionality. ShopperPress has over 10,000 customers worldwide. Features include affiliate stores, over 20 different payment gateways, 20+ different store designs to choose from, order management system, 24/7 customer support, and customizable product fields.

WP E-Commerce

WP-ECommerce is a WordPress shopping cart plugin that allows customers to buy products, services, and digital downloads. This plugin has over 1.5 million downloads. There is plenty of video support and payment gateway integrations. The plugin also has multi-lingual support and works with multiple currencies. Shipping is integrated with UPS, USPS, Australia Post, and Shipwire for real-time shipping rates. Checkout uses SSL security support for orders on the front-end and back-end. WP-Ecommerce also has support for catalog management, catalog browsing, etc.

WP Secure Downloads – $39.95

WP Secure Downloads is a premium WordPress plugin that lets you sell digital products online. This plugin allows you to have total control over digital goods and it does not have service/commission/usage/or storage fees. There is a built-in shopping cart, automatic theme integration, PayPal support, and free upgrades for life.

Automatic SEO Links – Automatic SEO Links is a plugin that lets you choose a word or words for automatic linking, internally and externally. You can also set anchor text and choose if it should be “nofollow.”

Google XML Sitemaps – Google (XML) Sitemaps Generator For WordPress generates a XML-Sitemap compliant sitemap of your WordPress blog. The format is supported by Google, Bing, Yahoo!, Ask.com, etc. The XML-Sitemap format was introduced in 2005 by Google and adopted in 2006 by Yahoo!, Bing, and Ask.com.

HeadSpace 2 – Headspace 2 is an all-in-one plugin for managing meta-data and handling a wide range of SEO tasks. You can tag posts, create custom titles, and descriptions to improve page ranking. Tags and keywords are auto-suggested using a smart algorithm. Headspace can import data from plugins like UTW, SEO Title tags, All-In-One SEO, Jerome’s Keywords, Simple Tagging, Lud.icro.us HeadMeta, HeadMeta description, and More Unique.

Meta Robots WordPress – Meta Robots WordPress Plugin makes it easy to prevent indexing of your search result pages while still allowing search engines to follow the links on them. It also makes it easier to prevent indexing of your login, register, feed, and admin pages.

Nofollow Case by Case – Nofollow Case by Case is a plugin that lets you strip the “nofollow” command that is in the comments section. It can be applied only to the comments that you want them to.

Platinum SEO Plugin – The Platinum SEO Plugin has everything that the All in One SEO plugin has plus additional features. You can add index/noindex/follow/nofollow/noodp/noydir/and meta tags to any post or page. You can get rid of the universal title format that the plugin offers for any post or page. The Platinum SEO plugin optimizes post and page titles for search engines. It also generates all SEO relevant META tags automatically and helps you avoid duplicate content.

Redirection – Redirection is a WordPress plugin for managing 301 redirections and keeping track of 404 errors. There are full logs of redirected URLs.

SEO Content Control – SEO Content Control lets you identify and clean up weak content. The plugin lets you keep track of posts that have too little content and where an excerpt or meta description is missing.

SEO for Paged Comments – The paged comments feature makes WordPress posts load faster, but SEO became a problem because the same content would appear on different permalinks. This plugin has all but the main permalink show an excerpt of the post with a link back to the permalink page.

SEO Friendly and HTML Valid Subheadings – The SEO friendly and HTML valid subheadings plugin adds an H1 tag to archive pages and the homepage set to the title of those pages or the name of the blog. On certain pages, the H2 will become H3, H3 into H4, H4 into H5, and so forth. This way your website will be HTML valid.

SEO Friendly Images – SEO Friendly Images is a WordPress optimization plugin that automatically updates your images with the proper ALT and TITLE attributes.

SEO No Duplicate WordPress – SEO No Duplicate is a WordPress plugin that helps tell search engine bots the preferred version of a post page by specifying the canonical properly within your head tag. This makes you look less like an SEO spammer.

SEO Post Link – SEO Post Friendly will reduce the size of your permalinks automatically. The longer your URL, the problems it would have in being detected by search engines.

SEO Rank Reporter – SEO Rank Reporter is a WordPress plugin that will track your Google rankings every 3 days and report the data in an easy-to-read graph. You can visualize your traffic flow in response to ranking changes and receive e-mails notifying you of major rank changes. Check out a demo here.

SEO Smart Links – SEO Smart Links can link keywords and phrases in your posts and comments with corresponding posts, pages, categories, and tags on your blog.

SEO Tag Cloud Widget – SEO Tag Cloud Widget displays the tag cloud in an SEO-friendly way by using HTML markup.

SEO Title Tag – Title tags are one of the most on-page factors for WordPress SEO. The SEO Title Tag WordPress plugin lets you decouple post titles from title tags. There is mass editing of title tags for all posts, static pages, category pages, tag pages, archive by month pages, etc.

SEO Ultimate – SEO Ultimate is an all-in-one SEO plugin that has a title tag rewriter, meta description editor, meta keywords editor, meta robot tags editor, a powerful deeplinking tool, Canonicalizer, 404 monitor, linkbox inserter, slug post URL optimizer, etc.

Simple Tags – Simple Tags is a plugin that has term suggestions, mass edit terms, auto link terms, Ajax autocompletion, click terms, auto terms, etc.

Sitemap Generator – The Sitemap Generator plugin creates a sitemap for your WordPress powered website. The sitemap can be customized from its own options page in the WordPress admin panel. Features include multi-level categories and page support, category/page exclusion, multiple-page generation, and permalink support.

TGFI.net SEO WordPress Plugin – The TGFI.net SEO WordPress plugin lets you set custom page titles, meta descriptions, and meta keywords.

WordPress SEO by Yoast – WordPress SEO by Yoast has a snippet preview to see what your post or page looks like in search results. The plugin has Linkdex Page Analysis functionality that lets you check simple things that you may forget like if you have images in your post and whether they have an ALT tag containing the focus keyword for that post. The plugin automatically creates XML sitemaps and notifies Google and Bing that it exists.

Absolum

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Andrina Lite

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Annotum Base

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Application

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Basic Law

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BlogoLife

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Business Lite

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Clear Style

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ColorWay

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Commune

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Custom Community

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Diabolique Fountain

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Esplanade

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Famous

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Hatch

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Galaxy

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iFeature

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Lazy Sunday

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Lugada

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Minicard

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Minimatica

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Online Marketer

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Oxygen

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PageLines

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Pandora

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Photolistic

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Pilcrow

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Rbox

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Responsive

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Shell Lite

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SmartBiz

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SmartOne

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Target

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ThemeMagic

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Themia Lite

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ToomMorel Lite

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webmagazine

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WP-Creativix

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WPFolio

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ZeeBizzCard

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zeeBusiness

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zeeSynergie

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Zenon Lite

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Aeterno

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1. AutoFocus [Download]

1. 404 Notifier – 404 Notifier is a plugin that gives you a log of all of the 404 errors that your readers end up seeing.

2. Admin Dropdown Menus – Admin Dropdown Menus adds dropdown menus to portions of the admin area to make it feel less cluttered.

3. Auto-Hyperlink URLs – Auto-hyperlink URLs allows you to automatically convert URLs into hyperlinks with several different options.

4. AWSOM Pixgallery – AWSOM Pixgallery is an image gallery and archive plugin for WordPress that makes it easy for artists to set up portfolios.

5. Cincopa – Cincopa is a WordPress plugin that allows you to add image galleries, slideshows, photo albums, videos, music playlists, and media libraries to WordPress posts and pages.