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Welcome

These pages provide pointers to GIS companies, associations, and government web pages as well as sources of software, data, publications, and services. Information does not reflect use or endorsement by the U.S. Government.

Navigation. If a topic has an arrow, click on the arrow to select a subtopic (you can't select the topic from the heading). If a topic does not have an arrow, simply click on the name to move to the topic. To close a topic, click on the arrow again or click on another topic.

THIS SITE WILL NO LONGER BE AVAILABLE AS OF 31 DECEMBER 2015.

Site URL: http://www.agc.army.milAbout/RelatedLinks/GISInternetResources.aspx

Page Point of Contact:
U.S. Army Geospatial Center, Alexandria, VA
Telephone: (703) 428-3594; DSN: 328-3594
E-Mail: Doug Caldwell

Links last checked on June 5, 2015
New links added on June 5, 2015

General GIS

The sites listed in this section are good starting points for learning about GIS.

Geo FAQs

FAQs provide answers to Frequently Asked Questions about a topic.

GIS FAQ (GIS Lounge)
comp.graphics.algorithms FAQ
Global Navigation Satellite System (GNSS) FAQ (Federal Aviation Administration)

Megasites

Megasites highlights sites that contain pointers to large numbers of other GIS sites.

Geospatial Media & Communications
GISCafe.com
GIS.com
GISGeography.com
GIS Lounge
GISUser.com
GeoCommunity
Best of the Web: Geographic Information Systems
wiki.GIS.com

Mailing Lists/Newsgroups

On-Line GIS Discussion Archive (Directions Magazine)
Map History-Related Discussion Lists
Archives of MAPS-L

Blogs

Blogs are often the sites for the latest information on geospatial technology.

slashgeo
All Points Blog
All Things Geography
Andrew Zolnai Blog
Another GIS Blog
ArcGIS Blog
Axis Maps Blog
Big Map Blog
Borderlines
British Cartographic Society
Carbon Cloud
Cartogrammar
cartophile
CartoTalk
Cartastrophe
chartsnthings
Clever Elephant
Collins Maps
countours (National Geographic Maps)
Creative Curriculum Integration and GIS in Education
Digital Urban
edparsons.com
Floating Sheep
Flowing Data
Free and Open Source GIS Ramblings
Free Geography Tools
Free GIS Data and Imagery Geoblog
Galdos Systems Inc.
geoMusings
GEOData Policy
Geographic Travels
The Geography Collective
geoiQ
Geonames
Georeferenced
geothought
geosocialite
geoXchange
GIS and Agent-Based Modelling
GIS and Science
GIS Education Community
GIS in XML
GIS Lounge
GISuser
Google Earth Blog
Google Earth Design
Google Geo Developers Blog
Google Lat Long Blog
Google Maps Mania
Google Sightseeing
GPS Tracklog
Gretchen Peterson's Blog
indiemaps.com
Information Aesthetics
International Cartographic Association
It's All About Data
Lin.ear th.inking
Lost States
Making Maps: DIY Cartography
Map Hugger
Map of the Week
Mapperz
Mapping Our World
MapQuest
National States Geographic Information Council
Ogle Earth
Participatory GIS
planet postgis
Presentation Zen
Smart Mobs (Howard Rheingold)
somethingaboutmaps
Spatial Information in the 21st Century
Spatial Law and Policy
Spatial Sustain
Stamen Design
Strange Maps
Transit Maps
Vector One
Very Spatial
Virender Ajmani
visualcomplexity
Warping History: Analytic Methods in Historical Cartography
Web Map Design
web-gis

Twitter

Twitter is a popular microblogging site, where messages are limited to 140 characters.

Twitter
Twitter Search GIS
Top 100 Geospatial Influencers on Twitter (Open Geo)
5 Terrific Twitter Mapping Tools
GeoChirp
Hypercities Egypt
Just Landed
Klout
How Influential Are You On Twitter?
Language Communities of Twitter
Mapping Online Publics
Mapping Your Twitter Followers
Map My Followers
Mapping Twitter Chats
Mapping Urban Twitter Usage
MappyHealth
Pulse of the Nation: US Mood Throughout the Day Inferred From Twitter (Northeastern and Harvard University)
See Something or say something (Eric Fischer)
Social Weather Mapping with Twitter
Trendsmap
Tweet360
TweetMap Alpha (Harvard University)
TweepsMap
tweetSentiments
Tweography
Twitter as a Mapping Tool
twitterdots.com
twittermap
twittermood
twittervision
tworldy.com
wefollow - GIS (Digg)

Wikis

Wikis provide user generated content dealing with geospatial issues.

GISWiki
Open Source Geospatial Foundation Wiki
OpenStreetMap
wiki.GIS.com
Wikipedia

Geographic Information System

Geographic Information Science

Photgrammetry

Remote Sensing

Cartography

Surveying

Geodesy

Dictionaries

Dictionaries and glossaries are helpful for sorting out terminology in the GIS community.

Abbreviations and Acronyms in GIS, Cartography, and RS
ESRI GIS Dictionary
Glossary of Cartographic Terms (University of Texas)
Glossary for the Geographer's Craft Project (University of Colorado)
Glossary of Mapping, Charting, and Geodetic Terms (NGA) (PDF)
Glossary of Toponymic Terminology (United Nations)
Ordnance Survey Glossary

Calendars

Conference and seminar schedules are listed here.

GIS and Mapping Industry Conferences (GeoCommunity)

Web Mapping

The web-based mapping sites provide information on products and applications for delivering maps and GIS services over the Internet.

General

The General web-mapping sites are meta sites with a wide variety of information on web-mapping and pointers to other sites.

Web Mapping Channel (GeoCommunity)
ICA Commission on Maps and the Internet
Web Mapping Applications (GeoCommunity)
Web Map Gallery (Directions Magazine)
Web Mapping (FreeGIS)

Products

Products sites point to specific software for delivering maps and images over the web. This includes map servers, image servers, sites dealing with XML/GML/SVG, Flash, and Web Hosting.

Map Servers

Commercial

Autodesk MapGuide Enterprise
Maptitude for the Web (Caliper)
Caris Software Products
Demis
Server GIS (ESRI)
FME Server Products
Full Circle Technologies
GDSK
GeoMicro AltaMap Server
IC Map (Collins Software)
idevio - Innovative Vector Storage and Delivery
Internet Application Server (GE Power Systems - Smallworld Technology)
Ionic Software
JMap (K2 Geospatial)
mapfish
Mapply
MapProvision
map-TV (Spatial Media) - Web Map Server
Map Manager (Compusult)
Mapquest
Mapufacture
NAC Geographic Products, Inc.
Korem Mapping Studio(Korem)
GIS Portal (SICAD)
STAR-APIC
TatukGIS
worldKit

Open Source (OS) or Free (F)

CartoWeb (OS)
geomajas (OS)
GeoMOOSE
GeoServer (OS)
mapfish (OS)
mapnik (F)
Map Server (OS)
MapGuide (OS)
OpenLayers
EasyWMS Open Source WebGIS Projects (OS)
TileMill

Image Servers

ArcGIS for Server Image Extension (ESRI)
LizardTech
SuperGIS Image Server (SuperGeo)

3D View Servers

Virtual Globe (Wikipedia)
Google Earth (Download and install client application)
Map 24 (3D option available after selecting map)
Skyline Globe
Virtual Globe (Norkart)
World Wind (NASA)

Geoprocessing Web Services

ArcGIS Server (ESRI)
Google Elevation API
Population Estimation Service (SEDAC)

XML/GML/SVG/HTML

Portable Document Format (PDF)

TerraGo Technologies
GeoPDF - Blog

geoRSS

An Introduction to GeoRSS (OGC White Paper - PDF)
GeoRSS: Geographically Encoded Objects for RSS Feeds
Fun with GeoRSS (Directions Magazine)
RSS to GeoRSS Converter (geonames.org)
ACME GeoRSS MapViewer
mappedup
worldKit GeoRSS
Yahoo! Maps GeoRSS

Mashups/Custom Maps

Mapping Usage Statistics
Data Mash-Ups and the Future of Mapping (JISC)
bing Maps (Microsoft)
deCarta APIs
Google Maps API

Become a Google Mapping Expert

More Than a Map
Leaflet
Mapquest Developer Network
Maptimize
Modest Maps
OpenLayers
Polymaps
Yahoo! Maps APIs

Applications - Do It Yourself Mapping

Mapping Mashups Tag Search (ProgrammableWeb)
Geospatial Engine for Mass Mapping Applications (GEMMA) (CASA)
HeatmapTool.com
LocaPoint
MapCruncher (Microsoft)
Maker (GeoCommons)
Mango (MangoMap)
mapufacture
Map-It (USGS)
notemapit
OpenHeatMap
OS OpenSpace API (Ordnance Survey)
Pin In The Map
quikmaps
Safety Maps
ShareMap
StepMap
Stickymap
Survey Mapper
tableau public
TargetMap
Wikimapia

Sites

This section highlights web mapping sites by their application area.

Atlases

Atlases show sample applications for delivering general map information and data over the Internet.

DEMIS World Map Server
Earth and Moon Viewer
eMapSite
Find a Map (Expedia)
Interactive Atlas(Mapquest)
Locator Services (HUD)
National Atlas of Canada On-Line
National Atlas of the United States of America
National Geographic Map Machine
Natural Earth Browser
publicprofiler/worldnames (atlas of surnames)
Window to My Environment (EPA)

Geocoding

Geocoding sites use a street address as input and provide the latitude and longitude of the address as output.

Geocode.com (TeleAtlas)
Batch Geocoding (Phillip Holmstrand)
Free Geocoding Service (TravelGIS.com)
geocoder.us

Reverse Geocoding

Reverse geocoding sites uses the latitude and longitude to locate a street address. The coordinates may be entered by hand or selected by pointing at a map.
Reverse Geocoding (Wikipedia)
Reverse Geocoding Webservices (GeoNames)
Reverse Geocoder for the United States (USNaviguide.com)

Imagery

Imagery servers provide aerial photography and satellite imagery over the web.

DigitalGlobe
getmapping.com - UK Imagery Server
Google Earth
Bing Maps (Microsoft)
Microsoft Research Maps (Microsoft)
NOAA Operational Significant Events Imagery
TerraFly
Seamless Data Distribution Delivery (USGS)
Global Visualization Viewer (USGS)

Localized Search Engines

Localized search engines allow you to locate businesses by type and location.

Google Maps
Business Locator (MapQuest)
Bing (Microsoft)
Yahoo! Local Maps

Route Planners

Route planners generate maps and directions given a start address to a stop address. Some planners help you identify a location to meet midway between to points.

Bing (Microsoft)
Expedia Driving Directions
Google Maps
MapQuest Directions
Map24 (Select Calculate Route)
OpenRouteService.org
Rand McNally
ViaMichelin (European Driving Directions)
Yandex Maps
Yahoo! Driving Directions
Meetways: Meet Me in the Middle
mezzoman: Meet in the Middle

Street Maps

Street Maps sites generate street-level maps when given a street address.

Find a Map (Expedia)
Google Maps
Bing (Microsoft)
Map24
Mapquest Maps
OpenStreetMap
Rand McNally
ViaMichelin (European Street Maps)
Yandex Maps
Yahoo! Local Maps

Compare On-Line Maps

buncha maps
Dual Maps
GeoTribu
Maps Compare
MapsOfAll.com

Topographic Maps

Topographic maps show general landscape features with elevations as contours.

Microsoft research Maps
mytopo (MapTech)
The National Map Viewer (USGS)
Trails.com
USA Topo Maps (Esri)

Real-Time Maps

Real-time maps map data from sensors and other sources as the data is acquired.

Catch the News on a World Map with these 7 Map-based News Aggregators
Today's Front Pages (Newseum)
Live Ships Map (AIS)
Ship Tracking (Maersk)
NextBus (NextBus)
Rain Alarm
San Diego Real-Time Traffic (CalTrans)
Seattle Area Traffic (Washington State DOT)
Traveler Information (Minnesota Department of Transportation)
Twitter Map (Bing Maps)
Trendsmap - Twitter Trends (Trendsmap.com)
Live Twitter Map (PlanetEye)
twittervision
USGS Twitter Earthquake Dispatch (TED)
Flight Tracker (USA Today)

Zip Code-Based Look-Up

Location-based services are often by-passing the need for maps. Here are some zip-code based services that provide information when given a specific zip code.

Community Tapestry Demographic Data (ESRI Business Information Solutions)
Free On-Line Look-Ups (MelissaDATA)
Free online address lookup tool with fuzzy matching
Free Zip Code Lookup (zipinfo.com) Find county, area code, time zone, lat/lon.
Get a Map by Zip Code (MapQuest)
Local Harvest (Farmers' Markets, Family Farms, etc.)
Look Up a Zip Code (USPS)
National Address Server (University of Buffalo) Formats addresses, adds zip, and prints bar code.
Language Map of the US by Zip Code (Modern Language Association)
Sunrise and Sunset by Zip
US Postal Service Zip Code Look-Up
United States Zip Codes.org
MyBestSegments.com (Claritas)
Scorecard (The Pollution Information Site)
Window to My Environment (EPA)
Zip Code Comparisons (Zipskinny)
Zipdecode (Ben Fry)
Zip Scribble

GIS Software

GIS software sites provide software for the creation, management, analysis, and display of geographic data.

Products

These company sites sell and/or provide GIS software.

GIS Company Listing (GISCafe.com)
GIS and Mapping Software (GeoCommunity)
1 Spatial (formerly Laser-Scan)
Atlas GIS (Retail Profit management)
Autodesk Geospatial Solutions
Bentley Systems, Inc.
Blue Marble Geographics
Byers Engineering (SpatialAge Solutions)
Cadcorp (Spatial Information System)
Caliper Corporation (Maptitude GIS, TransCAD, GIS +)
Caliper Corporation - UK (Maptitude GIS, TransCAD, GIS +)
Caris
Carmenta
Clark University (IDRISI)
DeLorme Mapping
Eagle Point Software Corporation
Environmental Systems Research Institute, Inc. (ArcGIS)
ERDAS
Flowmap (Utrecht)
GDSK
Geospatial Asset Management (GE)
Genasys
Geodesys
Geodyssey Limited of Calgary
Golden Software (Surfer, Grapher, MapViewer, Voxler, and Didger)
GRASS GIS
i-cubed
Innogistic Software plc
Intergraph
Manifold GIS
MicroImages, Inc.(TNTmips, TNTlite)
Map Maker Pro (Map Maker, Ltd.)
MapWindow GIS
Microsoft MapPoint
Pitney Bowes
PCI Geomatics
Red Hen
STAR-APIC
TatukGIS
Envitia

.Net Objects

.Net/COM objects allow developers to build Windows-based applications that incorporate mapping and GIS capabilities.

GeoMicro
Carbon Tools Pro (The Carbon Project)
Carmenta
CartoWorld.com
ArcGIS Engine (ESRI)
Graticule
Luciad - Software Components for Networked GIS (COM and JAVA)
MapLink Pro (Envitia)
MapPro (UnderTow Software)
Sylvan
TatukGIS

Java GIS

The appeal of Java is the ability to write software once and run it on different machines.

Luciad - Software Components for Networked GIS (COM and JAVA)
Object F/X (Java-based Geospatial Solutions)
Carmenta

Data Viewers

Data viewers listed here are free software that can be used to look at geographic data.

Viewers (GeoCommunity)
Explorer Applications (ESRI)
CartoMap Viewer (Select Products -> Free Viewer)
Christine GIS Viewer
dlgv32 DRG/DLG/SDTS Viewing Software (USGS)
Gaia (The Carbon Project)
GeoGenesis LITE (The Carbon Project)
Geospatial Explorer (Cyze & Associates)
GML Viewer (Snowflake Software)
Shape Viewer
TatukGIS Viewer (TatukGIS)
Thuban (Free Geographic Data Viewer)
TNTAtlas (MicroImages)
tkgeomap (Tcl/Tk Mapping Routines)

Free (and almost free) Software

Look here for free and Open Source GIS software and utilities.

General

Free Software, Scripts, Extensions, Demos (GeoCommunity)
Christine GIS
DIVA-GIS (For the analysis of biodiversity - USGS)
GeoDa (Exploratory Spatial Data Analysis) Arizona State University
GeoFlow (Microsoft Research - Excel 2013 Add-In)
GeoGenesis LITE (IAVO)
GeoTools
GMT - The Generic Mapping Tools
LandSerf (surface visualization)
Map Maker Gratis
Mapping and Surveying Freeware (Softree)
MICRODEM (DEM software) US Naval Academy

Open Source

FreeGIS.org
MapTools.org
Open Source Geospatial Foundation (OSGeo)
Open Source GIS
Cartographic Projections Library - PROJ.4
Geospatial Data Abstraction Library (GDAL)
FalconView (GTRI)
Flowmap (Utrecht University)
Geometry Engine Open Source (GEOS)
GeoNetwork - Geographic Metadata Catalog

GeoNetwork - Download
GeoServer
GeoWebcache
GeoTools (Codehaus)
Generic Mapping Tools (GMT)
GRASS GIS
gvSIG
MapWindow
OpenEV
Open Jump
OpenLayers
OpenMap (BBN) GIS
PostGIS
Portable GIS
Quantum GIS

GIS Tutorial with QGIS
SPRING
User-friendly Desktop Internet GIS (uDig)
worldKit