Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. VoiceWeb is a privately held company that delivers speech enabled products and applications to replace the now obsolete DTMF systems for their clients. The company specializes in highly interactive voice user interfaces with natural language understanding and several degrees of freedom.The company was founded in March 2001 by Dr. Nikos Patsis & Dr. Damianos Chatziantoniou and launched the first Greek Voice Portal in May 2001. Since then, the company has become the premier Speech Application Developer and Value-Added Service Provider in Greece and has offices in Athens, Greece and Guatemala City, Guatemala. Amongst the major stockholders are InQLab, the 1st Greek incubator of technology startups and SETE Ventures, a Venture Capital located in Geneva. VoiceWeb is certified with ISO 9001:2000 for the design, development and implementation of Speech Applications and Telephony Services.