Boldt Webservice offers a couple of extensions to Joomla! and VirtueMart.
BwPostman is a complete and extensive newsletter extension for Joomla!® 3.3.6. Despite the manifold possibilities handling BwPostman is easy and intuitive.
BwTransifex is a Joomla! extension that grabs the latest translation files from transifex.com for an extension and automatically builds a Joomla! language pack with them.
The current version is 1.0.0