OpenCart is an online store management system. It is PHP-based, using a MySQL database and HTML components. Support is provided for different languages and currencies. It is freely available under the GNU General Public License.
If you’re thinking about using OpenCart for your online store, you should consider a couple of things. First, you’ll have to be comfortable setting up and maintaining a highly-technical store largely on your own. Second, you’ll need to be prepared to purchase a good number of add-ons.