21 OpenSource CMS ShoppingCarts

1. osCommerce
2. Magento
3. CandyPressStore
4. Cubecart
5. Agoracart
6. Zencart
7. Prestashop
8. storesprite
9. Quick.Cart
10.Opencart
11.Cart32
12.CRE Loaded
13.Ubercart
14. KonaKart
15. MetaCart
16. phpShop
17.nopCommmerce
18.oscMall
19.Worpress (WP e-commerce)
20.Joomla (VirtueMart)
21.phpCart