Abantecart is a combination experiences of opencart , joomla and drupal.
Test your skills in various opensources. One opensources platform that is new is abantecart similarities of opencart. The backend environment is like joomla for user interface and has a backend design block like drupal which is perfect for customization design and scalability . This platform was release in the year 2010 and has the ability to mature if the community is highly active which opensources can grow in development cycle.
I believed abantecart is more powerful than opencart but luck of volunteer to develop constantly . Abantecart is scalable in buildin modules but few opensources of templates design.
Stronger community is needed to grow the open sources software development.