With the popularity of osCommerce grew many contributions that were made available to download for free. These contributions are an excellent source if your looking for added functionality for your site.

The problem with osCommerce contributions is quality and reliability. The majority of contributions are written by skilled developers for a specific site and then shared with the osCommerce community. These contributions are generally not tested on a fresh osCommerce installation and because of the many site variations are not guaranteed to work correctly.

Although most of the contributions are supplied with step by step instructions many can conflict with existing contributions and need modification to work correctly.

One of the most serious pitfalls of using an osCommerce contribution is the risk of using a badly coded script which may enable hackers to cause damage or use your site for illegal activity.