Hi Blackhatters, There's so many open source e-commerce CMS available. I've done a fair bit of research but it's still very hard to make an informed decision on which service to use. I hope this post will help find information on: 1. Pro/Con's for each service 2. What makes the service unique 3. The reason why X is the best service over all the others Here are the lists of popular Open Source E-Commerce CMS: 1. Magneto 2. Zen-Cart 3. OSCommerce 4. Presta Shop 5. Open Cart 6. WP e-Commerce (WP plugin) 7. eShop (WP plugin) 8. YAK for wordpress (WP plugin) 9. Ubercart (Drupal extension) 10. VirtueMart (Joomla! extension) As you can see, I've listed 10 and there are many more out there. Testing all of these thoroughly would take months so I would be grateful if the people who have used some of these could leave their feedback. Thanks!