Digium, Inc. is a privately held communications technology company based in Huntsville, Alabama. In 1999, Digium’s founder Mark Spencer created Asterisk, the open source software project that can be used to turn a personal computer into a communications server or Voice over IP (VoIP) phone system. Today, Digium’s core business lines include Switchvox, the Asterisk-based VoIP business phone system, Digium IP phones, and Asterisk telephony software and hardware products. Digium continues to make Asterisk available to the global development community for free at Asterisk.org. Digium, Inc. sells all of its products and services directly to businesses and consumers. It also offers its business-to-business communications products, including Digium Cloud Services, through a worldwide network of resellers.