Jupiter Communications

One of the premier market research firms; provides research and advisory services centered on the global Internet economy

International Data Corporation (IDC)

Bills itself as the world’s leading provider of information technology (IT) industry analysis, market data and insight, and strategic and tactical guidance to builders, providers and users of information technology.

Gartner Group

Bills itself as the world leader in providing business technology research, consumer and market intelligence, consulting, conferences and decision-making tools.

Forrester Research

Forrester is a leading independent research firm that analyzes the future of technology change and its impact on businesses, consumers, and society.