Sum-e.com e-commerce framework has been developed using modern PHP techniques such MVC and DAO. It is stable and secure. Project has been open to the public so there is just a few components, but we believe it will grow rapidly as is easy to develop.

Feature ticket system will allow you to submit your feature to the development team and you can bump it up.

It is free and easy to set up for intermediate user. What you need is Linux server with Apache 2 and PHP at least 5.2.10

Using memcache it is crazy fast! Application can serve millions requests per month on average server configuration. (Average database hits per product page is 1)