Which is the best Open Source E-Commerce Software?

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Hey Guys!
Vote for the best E-Commerce software...

osCommerce
osCommerce (“open source Commerce”) is an e-commerce and online store-management software program. It can be used on any web server that has PHP and MySQL installed. It is available as free software under the GNU General Public License.

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Zen Cart
Zen Cart is an open source online store management system. It is PHP-based, using a MySQL database and HTML components. Support is provided for several languages and currencies, and it is freely available under the GNU General Public License.

Zen Cart branched from osCommerce as a separate project. Beyond some aesthetic changes, the major differences between the two systems come from Zen Cart's architectural changes(e.g. a template system) and additional included features in the core. Among the modules already included are a Gift Certificate/Voucher module which allows to create, send and manage the digital coupons. A module to sell downloads(pdf or other media files) is included as well.

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CubeCart
CubeCart is a free-to-use eCommerce software solution, designed to allow individuals and businesses sell tangible and digital goods on line. CubeCart is not Open Source software, although full source code is available at no cost, and the custom licensing model allows for customisation of the code.

At the time of writing, CubeCart is in use by over one million stores, according to a Google search.

On July 13, 2007, Devellion announced that CubeCart would be joining the GoPHP5 Initiative. This means that all new software releases after February 5th, 2008 will only support PHP 5.2 or later, although they have stated that PHP4 versions of the software will continue to be supported beyond this date.

Version 4.2.0 of the software was released on February 20th 2008, and was the first release following the GoPHP5 initiative guidelines, requiring a minimum PHP version of 5.2.0

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PrestaShop

PrestaShop is an Open Source ecommerce web application. v1.0 was released on July 31, 2008. It was founded in Paris, France, by Igor Schlumberger and Bruno Lévêque.

PrestaShop is available under the Open Software License version 3.0. It is simpler but faster alternative to Magento, making use of an Ajax interface.

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OpenCart

OpenCart is an open source PHP-based online shopping cart system. A robust e-commerce solution for Internet merchants with the ability to create their own online business and participate in e-commerce at a minimal cost.

OpenCart is designed feature rich, easy to use, search engine friendly and with a visually appealing interface.

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Magento
Magento is an Open Source ecommerce web application launched on March 31, 2008. It was created by Varien, building on components of the Zend Framework.

Magento is available under the Open Software License version 3.0. Since version 1.1.7 some parts are licensed under the Academic Free License version 3.0.

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StoreSprite
StoreSprite has all the features required to build, maintain and manage a successful, online store. Complex scripting is kept out of the way so that you can design and deploy a top rate store that your client can manage with little or no training. storesprite is released under a freeware license which means you can download it, install it and use it free of charge. The only stipulation is that you leave our copyright notices in place or pay a small fee to remove them from your installation. storesprite includes a whole raft of features that put it on a par with the expensive commercial products on the market - Free certainly does not mean basic!

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AgoraCart
AgoraCart is a free Open Source ecommerce shopping cart software solution offers you a very wide range of features that allow you to setup an online storefront or shop ranging from a simple template based store for novices to the integration of complex web design concepts created by your web designer. Use the existing templates and graphics or integrate your own web design. It's as simple as you want it to be. Ecommerce Shopping Cart Solution for Web Designers needing an ecommerce solution for their client's online storefronts. Agora Cart comes with almost limitless flexibility in many areas including design controls through Cascading Style Sheets (css), storefront templates, customizable layouts, custom product category layouts, customization of nearly all cart features for the code hobbyist, modular "drop in and go" code as well as AgoraScript, our own scripting language inside parsed HTML pages, that experienced programmers can appreciate.

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X-Cart
X-Cart shopping cart software is based on PHP Smarty templates, this makes it very flexible and easy to modify. The data is stored in MySQL database. W3C-compliant storefront design with a CSS-based layout. You receive a complete source code and SQL tables for MySQL database to make them extended or customized easily. X-Cart is a turnkey package. Installation is handled by web-based step-by-step wizard to make the system running immediately after receiving it. X-Cart is search engine friendly. A merchant can specify meta tags and define custom URLs for product and category pages that results in higher search engine rankings.

[samuel29]

Magento
Magento is an Open Source ecommerce web application launched on March 31, 2008. It was created by Varien, building on components of the Zend Framework.

Magento is available under the Open Software License version 3.0. Since version 1.1.7 some parts are licensed under the Academic Free License version 3.0.

According to me, it's a groundbreaking open source technology. It is the fastest growing eCommerce platform in the market with feature-rich, enterprise-grade eCommerce solution. Magento eCommerce Development offers merchants complete flexibility and control over the user experience, content and functionality of their online stores.

[Clifford12]

I think Os-commerce is the best e-commerce software available for having robust web applications.It is widely used among all other e-commerce softwares.

I feel Zen Cart is one of the better free shopping carts. It is an open source shopping cart system, which means that developers can add to the code, developing additional features and functionalities.Zen Cart is easy to install, and it is also easy to use. The interface is very user friendly, and the shopping cart can be installed with relative ease. In fact, you can have your Zen Cart installed and activated in less than 15 minutes