GeoNames is a geographical database. It is available for download free of charge under a creative commons attribution license. It contains over eight million geographical names and consists of 6.5 million unique features whereof 2.2 million populated places and 1.8 million alternate names. All features are categorized into one out of nine feature classes and further sub-categorized into one out of 645 feature codes. (more statistics ...).
The data is accessible free of charge through a number of web services and a daily database export. GeoNames is already serving up to over 11 million web service requests per day.

Maps of many cities worldwide. Interactive and exhaustive, with street search, zoom and printout. English, Spanish, French and German supported. You can view really detailed maps of available cities. (Site is mostly in German.)

Mappy is a multimedia service across the whole of Europe that offers route planning services, publishes maps and supplies tourist and practical information. Currently maps available for 22 European countries.

Ranked within the top 10 most powerful U.S. brands on the Internet by NetRatings and as both the number one mapping site and number one directories site by comScore Media Metrix, MapQuest.com is the world's leader in helping consumers find anyplace in the physical world over any connected device.

Originally founded in 1991 as Magellan Geographix, Maps.com is a mapping solutions company serving the business to consumer, business to business, and business to education marketplaces. Maps.com, the web site, is a combination of content and commerce offerings, which attracts over 2,000,000 unique users per month and consistently ranks among the most visited travel web sites.

University of Texas at Austin Library Map Collection. Very good resource. Includes online maps of current interest which point to maps of places currently in the news ..

Rand McNally & Company offers the most trusted tools to discover, map and navigate your world. From America's number-one-selling Road Atlas, The Thomas Guide, and Goode's World Atlas to wireless Mobile Travel Tools and IntelliRoute trucking database, Rand McNally dominates the mapping, routing, geographic reference, and trip-planning tool marketplace.

More than 100 General Maps are available currently. Maps are in PDF format for best display and print results.

Peacekeeping Maps: Display, save or print the latest deployment maps of peacekeeping operations. Maps are in PDF format for best display and print results. Click and select a mission map in the menu box below. Links to DPKO mission web sites are also available.

List of Territories: Capital city, country code and country name of each member and non-member State is listed. The list is meant to be used in conjunction with the Terminology Bulletin of Country Names.

Map Library: The Map Collection houses over 80,000 maps, some 3,000 atlases, gazetteers, travel guides, cartographic and geographic reference works as well as digital cartographic products.