xB Browser (formerly known as TorPark and Xerobank browser) was a web browser designed to run on both the Tor and anonymity networks, and is available as component of the xB Machine and the xB Installer. It is designed for use on portable media such as a USB flash drive, but it can also be used on any hard disk drive. As such, a secure and encrypted connection to any of the Tor or XeroBank routers can be created from any computer with a suitable Internet connection, and the browser clears all data that was created on the portable drive upon exit or on demand.