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Aberdeen Group (Popularity:  )
http://www.aberdeen.com
Research and analysis of information technology companies and products. Many free downloads. Custom consulting services.
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Butler Group (Popularity: )
http://www.butlergroup.com/
Research and analysis of information technology covering products, services, and companies. Organizes events. Some free downloads. Custom consulting services. European ...
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Differentia LLC (Popularity: )
http://www.differentia.com
Research and analysis, primarily of voice technologies. Custom consulting services.
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Forrester Research (Popularity: )
http://www.forrester.com/
Research and analysis information technology companies, products, and services, and of many specific industries. Many free downloads. Free newsletters. Custom ...
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Gartner Group (Popularity: )
http://www.gartner.com
Research and analysis of information technology companies, products, and services, and of several industry sectors. Custom research and consulting services. ...
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Idate (Popularity: )
http://www.idate.org
Research and analysis of telecommunications, Internet, and media companies. Organizes events. Free downloads. Custom consulting services.
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International Data Corporation (Popularity: )
http://www.idc.com
Research of information technology companies and markets. Free newsletters. Custom consulting services.
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Juniper Research (Popularity: )
http://www.juniperresearch.com/
Research, analysis and reporting of telecommunications technologies, markets and issues. Providers of research reports, consultancy and free white papers.
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Ovum (Popularity: )
http://www.ovum.com/
Research and analysis of information technology companies, products, and services. Organizes events. Some free downloads. Custom consulting services. European based.
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Technology Evaluation (Popularity: )
http://www.technologyevaluation.com
Research of information technology products. Some free downloads and newsletters.
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The Denali Group (Popularity: )
http://www.sellmorenow.com/
Analysis of information technology products. Free downloads of summary reviews. Detailed reviews available for purchase.
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Ventana Research (Popularity: )
http://www.ventanaresearch.com
Research and analysis of information technology companies and products. Many free downloads. Custom consulting services.
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Yankee Group (Popularity: )
http://www.yankeegroup.com
Research and analysis of information technology companies, products and services, and specific industry sectors. Organizes events.
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