Advantages of osCommerce

Trusted
osCommerce is well known and widely used. It has a large support community and a long history behind it.

Cost effective
Open source software is free to download and use, and existing code/contributions are also free.

Easy to use
The software features a familiar shopping cart model, with a number of ways to access the product catalog.

Suitable for a wide range of stores
Clients can choose whether to build/modify their own site or use an experienced developer, and the software suits a wide range of store types. In addition, osCommerce supports international stores, as it includes facilities for multilanguage and multi-currency shops.

Flexible
osCommerce is customizable and expandable by someone with the right skills or the desire to learn.

Secure
The software allows the use of Secure Sockets Layer (SSL) encryption. Other features in the Administration area allow greater precautions.

Well supported
There is a strong community of osCommerce users and developers.

Increases effective selling
There are several ways osCommerce optimizes selling. For example, it allows product catalogs that can be browsed and searched, product specials, reviews, newsletters, as well as the Related Products feature and the What’s New feature.

Facilitates promotion of customer base
osCommerce helps merchants build up a customer base by being customer focused and easy to use, and by providing extras such as reviews, newsletters, and the Email a Friend feature.

Customer focused
Customers find osCommerce easy to use. They can receive newsletters and email notifications about products, and they can read and create online product reviews.

Customers also appreciate the secure accounts that protect their personal data, allow access to their purchase history, and provide updates on the status of their orders.

Merchant focused
osCommerce is an affordable option for merchants and it caters for a wide range of languages, currencies and store sizes. It provides a wide range of features, including report generation, payment processing and backup tools, as well as invoices and packing slips.

osCommerce features a straightforward administration area that is easy to secure, and merchants have control of catalog content and structures, products, and shipping cost calculations.

Source : http://www.oscommerce.co.nz