Statistics and Demographics

WebHosting.Info - Provides statistics and research data about the Web services industry. Tracks over 35,000 Web hosting companies worldwide.
http://www.webhosting.info/

Netcraft Web Server Survey - A monthly updated survey of web server software usage on computers connected to the Internet. Also surveys most popular websites, and top level domains.
http://www.netcraft.com/Survey/

NEC Study - Predicts competition and diversity on the web. <small>(April 15, 2002)</small>
http://modelingtheweb.com/

Zooknic Internet Geography Project - Data, maps and analysis on the geographic distribution of Internet domain names by city, region, state, and country.
http://www.zooknic.com/

Internet Domain Survey - Attempts to discover every host on the Internet by doing a complete search of the Domain Name System. Statistics available for free and commercially.
http://www.isc.org/ds/

StatMetrix - Subscription service that provides monthly research reports and newsletters for global web activity, search engine use, web browser market share, operating systems, connection speeds, and mobile web trends.
http://www.statmetrix.com

Internet World Stats - Internet usage data for 233 countries and regions, consolidated from various periodic surveys.
http://www.internetworldstats.com

Browser News: Stats - Browser usage statistics from the major sites and some analysis.
http://www.upsdell.com/BrowserNews/stat.htm

Security Space - Monthly published research reports covering issues like web server market share, popularity of web sites, and web authoring tools.
https://secure1.securityspace.com/s_survey/data/

Major Internet Backbone MAPs - Maps of Internet backbones, sorted by market share.
http://navigators.com/isp.html

ICT statistics - Statistics extracted from the ITU World Telecommunication Indicators Database, concerning the spread of information and communication technologies in over 200 economies worldwide
http://www.itu.int/ITU-D/ict/statistics/

Netvalley - IT history, reports, statistics and ranks.
http://www.netvalley.com/

Internet Demographics Directory - Directory of Internet demographics, user surveys, backbone/ISP reviews and Internet topology. Entries categorised and ranked.
http://internet-demographics.netfirms.com/

Internet Use(rs): Demography and Geography of the Internet - Academic paper from 2003 analysing the geography and demography of the Internet. By Dr Albert Benschop of the University of Amsterdam.
http://www.sociosite.org/demography.php

Cooperative Association for Internet Data Analysis - CAIDA collects, monitors, analyzes, and visualizes several forms of Internet traffic data concerning network topology, workload characterization, performance, routing, and multicast behavior.
http://www.caida.org/

Internet Mapping Project: Map gallery - Contains graphical representations of the Internet. Looks like star maps, but with websites grouped by ISP.
http://research.lumeta.com/ches/map/gallery/

Nielsen//NetRatings - Information on Website usage, internet access, and advertising data.
http://www.netratings.com/