Magento

TypoGento is a middleware service that connects the content management system TYPO3 (version 4.2+) and the e-commerce application Magento. This enables companies and organisations to seemlessly include feature-rich shopping possibilities into their web site ... Because both of the integrated products are open source projects the middleware is for free as well. Everybody is encouraged to use it, change it and enhance it – and certainly give us feedback about it.

Visit TypoGento.com for more information.