Aberdeen Group
Research and analysis of information technology companies and products. Many free downloads. Custom consulting services.
AMR Research Central
Research and analysis of information technology companies, products, and industry trends. Free newsletters.
Butler Group
Research and analysis of information technology covering products, services, and companies. Organizes events. Some free downloads. Custom consulting services. European and Australian base.
Cambashi Limited
Management and marketing consultancy which focuses on delivering timely services to assist in business growth, market development and profit.
Differentia LLC
Research and analysis, primarily of voice technologies. Custom consulting services.
Forrester Research
Research and analysis information technology companies, products, and services, and of many specific industries. Many free downloads. Free newsletters. Custom research.
Gartner Group
Research and analysis of information technology companies, products, and services, and of several industry sectors. Custom research and consulting services. Events and conferences.
Giga Information Group
Research and analysis of information technology products and services. Custom research and consulting services. Events and conferences.
Idate
Research and analysis of telecommunications, Internet, and media companies. Organizes events. Free downloads. Custom consulting services.
International Data Corporation
Research of information technology companies and markets. Free newsletters. Custom consulting services.
Juniper Research
Research, analysis and reporting of telecommunications technologies, markets and issues. Providers of research reports, consultancy and free white papers.
Meta Group
Research and analysis of information technology products. Organizes events. Custom research and consulting services.
Ovum
Advising on the commercial impact of technology and market changes in telecoms, software and IT services.
Robert Frances Group
Analysis of information technology companies and services.
Technology Evaluation
Research of information technology products. Some free downloads and newsletters.
The Denali Group
Analysis of information technology products. Free downloads of summary reviews. Detailed reviews available for purchase.
Ventana Research
Research and analysis of information technology companies and products. Many free downloads. Custom consulting services.
Yankee Group
Research and analysis of information technology companies, products and services, and specific industry sectors. Organizes events.