The WordPress e-Commerce plugin is a state-of-the-art e-Commerce platform with a focus on aesthetics, web standards and usability. It is both free and priceless at the same time. This plugin makes it easy for you to accept payments online via Google Checkout, Paypal, Authorize.net, Payment Express. The basic plugin is free and more functionality can be added by purchasing one of the many plugin modules. Such extra functionality includes more payment gateways (Gold Cart & Grid Module), grid views for product sets (Gold Module), drag and drop shopping cart (DropShop 2.0 Module), a music player (MP3 Player Module), horizontal product viewer (Product Slider Module), private membership (Members Only Module), and buy now product buttons (NextGEN Gallery Buy Now Buttons Module). The WP e-Commerce plugin includes free technical support and free lifetime upgrades.

Watch a tutorial on how to set up a WordPress powered Ecommerce site in under 5 minutes!

Wordpress E-Commerce Plugin Website: Click here to visit website

Latest Version: 3.7.4
Price:FREE
Subscriptions with recurring billing are also available with the purchase of an upgrade module called Gold Cart. Individual bloggers can get a license for $40, while the price for businesses is $195.

Featured Sites:
Icon Dock
Seek and Destroy Clothing
Table Talk

Contact Wordpress E-Commerce: Instinct Media

PrestaShop is professional e-Commerce shopping cart software that you can download and use for free. It is web 2.0 based and extremely lightweight, so it runs very fast even on a shared server.

Having a very powerful back-end, store admins can manage the inventory, orders, customers & payments easily. System never limits you as it supports unlimited categories, sub-categories & image pictures. Sub-admin users can be created with different permissions so when someone can only track the inventory another admin can be limited to processing the orders.
Prestashop Website: Click here to visit website

Latest Version: 1.2.4
Price: FREE

Featured Sites:
Bagatelles
Abiessence
Marcel Green

Contact Prestashop RESTASHOP
6 rue Lacepede
Paris, 75005
FRANCE

Flying Cart Website: Click here to visit website

Price:
Free Package: up to 5 products
Standard Package $14.99/month for 50 products
Pro Package $29.99/month for 250 products
Super Package $59.99/month for 1000 products

Featured Sites:
Flux Coll
LikeWear
Retro Beer Items

Contact Flying Cart:

is a shopping cart solution for small businesses featuring easy installation with no software to download. The cart has an ad supported free version which can be upgraded to a paid version when required. If you are just starting out and don’t want to spend hours installing and customizing software this may be worth taking a look at. Those who register can also interact among themselves and help each other manage their stores, and even transfer a whole store so that another takes up managerial duties.
ChargeWell Website: Click here to visit website

Price: FREE

Contact ChargeWell:
2118 Green Watch Way #100
Reston, VA 20191
Email: support@chargewell.com
Call: 1-256-513-5097

Übercart is a complete, Drupal e-commerce solution. Check out the Übercart project page at Drupal.org. The developers of this fine looking piece of e-commerce goodness call it an escape from osCommerce. (Is it also an escape from Zen Cart – the previous osCommerce exit strategy?) The best news is that it is a collection of Drupal based modules – not a hack in – that will allow other great development options for an e-commerce website:
Content development
Several great options for ratings and reviews
Discussion forum
Community development
Flexible theming possibilities
The list goes on…
Uber Cart Website: Click here to visit website

Price: Free

Featured Sites:
Ben Simon
West Paw Design
Blue Point Security

Contact Uber Cart: Ubercart Forum

CRE Loaded is like Oscommerce but with many more contributions installed. Some of the nice contributions it has are Easy Populate which lets you populate your database from an Excel file, coupon codes, administrator access levels, template system, and an affiliate manager. CRE Loaded also has one of the Oscommerce templating systems installed which allows you to more easily integrate a design into the system and control which information boxes show on the left and right columns.

Pros
Many contributions from Oscommerce already installed

Cons
Contributions from Oscommerce.com can be more difficult to install, but CRE Loaded has many of its own already converted
Buggy code for some modules like multi vendor shipping

Price:
PCI CE Shopping Cart (Community Edition): FREE
PCI Pro Shopping Cart: $250
PCI B2B Shopping Cart: $416.50

Featured Customer Websites:
Essential Stuff
Mariner Parts
Viza Motors

Contact CRE Loaded:
CHAIN REACTION ECOMMERCE, INC.
112 Krog Street Ste. 19
Atlanta, Georgia 30307

Phone: 404.961.9840
Toll-Free: 800.609.2141
Fax: 404.645.7010

Visit Website: CRE Loaded

Zen Cart is a PHP/MySQL open source shopping cart. It is completely free, and comes with source code which you can freely modify. The software is developed by a community effort. The code is based on the popular osCommerce shopping cart. The goal of the Zen Cart project is essentially to make an easier to use version of osCommerce which can be installed more quickly, modified more easily and have a more usable configuration out of the box. Being a community effort, many of its users are very passionate about this cart, and are constantly developing add on modules.

Price: Free
Latest Version: 1.3.8

Featured Sites:
Floracopeia
Moissanite Co
Isabel Harris

Contact Zencart: Zencart Community Forum
Zencart Website: Click Here

PayPal provides a very popular free shopping cart system (they take a percentage of sales with no monthly fees). You are able to take credit cards without having to have a merchant account. Just create “Add to Cart” or “Buy Now” buttons and accept payments from credit cards as well as payments from PayPal balances. Another factor in choosing the PayPal shopping cart initially was its simplicity. Anyone with basic HTML skill will have no problem with adding it into a page. The process is quite simple. Log in to your PayPal account and click on “merchant tools” and then “shopping cart”. Complete the wizard and then copy and paste the code into your site where you would like the “Buy” button. Nothing could be easier.

There are several problems with using the PayPal shopping cart. First of all there are no statistics available. There is no easy way for you to compare your products’ sales. And there is no way to easily adjust for different shipping rates to different countries or areas of the U.S. There isn’t a cross sell mechanism, and there is no way to easily tell if a buyer is a new customer or a returning customer. And wouldn’t it be nice to compare this month’s sales to last? PayPal can’t do it for you.

Price: Free + transaction fee per sale

Featured Sites:
Lotion Source
The White Aisle

Contact Paypal:
CALL TOLL-FREE 1-888-221-1161

If you are interested using Paypal to power your store, but don’t want to tinker with the html and integration, try PayPal Shop Maker to automatically build your store.

Paypal Website: Click here to visit website

CubeCart by Brooky.com, is an E–Commerce script written with PHP & MySQL. CubeCart is actually a free E–commerce Script that has their logo on the page. If you need to edit or remove the CubeCart copyright logo they charge $59.95 per domain and you will be issued with a License Key.

Cube Cart Website: Click here to visit website

Price:
Cube Cart V3: Free
Cube Cart V4: $129 – $179

Trial Version: FREE 30 Day Trial

Featured Sites:
Old Skool Motorcycles
TM Collectables
Brain Bucket

Contact Cube Cart:
Office Address: (Meetings/Visits by appointment only)
Devellion Limited
13 Ducketts Wharf,
South Street,
Bishop’s Stortford,
Hertfordshire. CM23 3AR
UNITED KINGDOM

Telephone: (for Sales & Billing enquiries only)
London, UK: 0207 183 5536
New York, US: 1-646-688-1327
Rest of world: +44 207 183 5536