Liferay Commerce
Liferay Commerce is an open source digital commerce platform written
in Java. It was built from the ground up to work with Liferay Portal
so that Liferay developers can leverage fully integrated web content
management systems and best-in-breed portal capabilities in their
commerce projects. Liferay designed it for commerce projects that are
very large or complex; it can support millions of products in
challenging B2B industries.