Several firms collect and sell their own proprietary estimates of current traffic volumes and related measures as well as projections for the future. They are listed here without any endorsements, just for completeness, with as much information about their reports as is public.
- TeleGeography publishes a variety of
reports. One from August 2008 stated that "international Internet traffic grew 53% between mid-2007 and
mid-2008, down from 61% the preceding year,"
More details are available at
Global Internet Geography executive summary.
A Jan. 2009 presentation summarizing many TeleGeography reports is available at PTC'09 deck.
- IGI (Information Gatekeepers, Inc.) published in October 2006 "Internet Growth 2006: Traffic on the Internet." An executive summary is posted here by permission of IGI.