Geo
National Geographic
Since 1888, we've traveled the Earth, sharing its amazing stories with new generations. Official Twitter account of National Geographic.1,880,865 followers | Follow
Ryan Sarver
Director, Platform at Twitter. Detroit and Boston export. Foodie and over-the-hill hockey player. @devon's lesser half275,622 followers | Follow
GoogleEarth Outreach
Google Earth Outreach . You want to change the world, we want to help.25,802 followers | Follow
Christian O Petersen
Partner Progression Partners, @CloudMade VP Community, Boards: Brandworkz, @Cogniance. Network w/Startup founders, mobile developers. Connect:Facebook/LinkedIn9,859 followers | Follow
Geospatial News
Geospatial news, articles, events, and jobs relating to GIS, maps, cartography, and geography, from Caitlin Dempsey, editor of GIS Lounge.9,354 followers | Follow
GIS Geospatial News
GISuser is a leading source of news and tips for the GIS, mapping, mobile, social location, and geospatial professional community8,913 followers | Follow
Patrick Meier
Digital Humanitarian | Visionary | Speaker. PhD, Humanitarian Technology, Crisis Mapping, Crowdsourcing, Social Media, Conflict Early Warning, Civil Resistance.7,827 followers | Follow
GPS Business News
GPS Business News is an online media providing business insights on mass market GPS applications: hardware, software and content for handsets, CE and cars.6,165 followers | Follow
Chris Ruff
CEO/President- UIEvolution, a global leader in connected services for mobile/tablet/TV/automotive applications.6,119 followers | Follow
The GIS Forum
The GIS forum twitter feed will be used to aggregate site posts and provide some quick site updates. It is monitored, but will probably not be very 'personal'.5,728 followers | Follow
Where Conference
The O'Reilly Where Conference: The Business of Location. Location technologies and ideas that matter. Industry-shaping trends. April 2-4, 2012 in SF.5,518 followers | Follow
Trimble Outdoors
We tweet about hiking, geocaching, GPS trips + the latest Trimble Outdoors news. For cycling trips follow @AllsportGPS5,098 followers | Follow
Esri User Conference
Where knowledge and imagination come together. Join us July 23–27, in San Diego, CA. Register by June 1 to save $200.4,917 followers | Follow
TomTom USA
This is the official Twitter account for the US Headquarters of TomTom, Inc. Consumers around the world enjoy our maps and GPS devices every day.4,711 followers | Follow
Glenn Letham
BC via Fort Collins - Geo Tech Editor, journalist, Mobile Tech influencer, Founder GISuser, LBSzone, Gadget nut, Social Strategist, Photo nut, Dog lover4,656 followers | Follow
NAVTEQ Maps
The Official NAVTEQ Twitterstream. Follow along for news and updates about the map driving a mobile world.4,492 followers | Follow
Esri Forestry Group
Resource for forestry & land management professionals interested in ArcGIS, a complete Geographic Information System (GIS) for designing & managing solutions.4,364 followers | Follow
geocommons
A community for anyone to share geographic data, maps and analysis. Powered by @geoiq!4,327 followers | Follow
Jeremy Irish
Jeremy is the President and CEO of Groundspeak, the company that operates Geocaching.com, Waymarking.com and Wherigo.com4,236 followers | Follow
GIS Web Maps
Tweeting GIS & Web Mapping Applications from around the world. What makes them good, what makes them bad and links to some examples3,884 followers | Follow
Andrew Turner
Neogeographer and CTO of GeoIQ & GeoCommons. Co-Founder of CrisisCommons. Open Source Advocate. Brewer, Trombonist, Idealistic Technocrat.3,778 followers | Follow
Sylvain Carle
Looking for new ideas/projects/work. Ex-CTO & co-founder of Needium. Internet, opensource, media & geo/local geek. See also @sylvaincarle for LANG=FR.3,753 followers | Follow
Alex Chaucer
Father. Using tools to guide data-driven decisions, explore the creative side of mapping, and the future of learning. The georevolution will be tweeted.3,578 followers | Follow
Shaan Hurley
Autodesk Technology Evangelist in the Office of the CTO. - Engineering, Design, Science, and All things Autodesk.3,568 followers | Follow
Bing Maps Developer
News and info for Bing Maps (formerly Virtual Earth) - John O'Brien MVP3,013 followers | Follow
GeospatialDiscussion
A website dedicated to the Geospatial Realm with emphasis being placed on GIS, Remote Sensing, and GPS.2,972 followers | Follow
Matt Rosenberg
Geography Guide for About.com & author of 2 books. I like/tweet: geography, population, climate, disasters, transportation, cities, environment, Earth, etc.2,953 followers | Follow
Guido Stein
Knitter, Podcaster, GIS Jockey, Community Organizer. My thoughts and views do not represent my company. Sometimes I don't want to own them either.2,645 followers | Follow
Esri Training
With more than 200 courses to choose from, obtain the skills you need to use Esri software and apply what you have learned to your own jobs and projects.2,592 followers | Follow
DeLorme GPS
inReach two-way satellite communicator: Send and receive messages from anywhere.2,576 followers | Follow
Brien Green
Husband, Dad, Geographer, Cyclist, Yogi, Writer. Part of @BentleySystems Government Solutions team. Making Infrastructure cool! Opinions are my own.2,554 followers | Follow
Justin C. Houk
Community Organizer, Content Curator, Needless to say these are my personal opinions.2,507 followers | Follow
freeeafrica
Connecting Africa to the World (Linking Entrepreneurs, Advocates and Investors). Entrepreneurship - Enterprise - Empowerment www.freeeafrica.com2,450 followers | Follow
Dave Smith
Many hats : Geospatial / Remote Sensing / Surveying / Mapping / Environmental / Planning / Engineering / Sustainability / Software / Enterprise Architecture2,388 followers | Follow
MadameSoybean
EnviroMngt & GIS, ex-Archaeologist, Design, MusicFilmArts, Apple, FreshEats, Fashion, Perfumery, GlutenEggSoyFree, BuddhaGirl, Aging Punk, Lotsa Lotsa Books.2,367 followers | Follow
Teresa Baldwin
GIS techie for rent, open data & open source fan, skeptic, asker of too many questions.2,334 followers | Follow
Al Pascual
Microsoft ASP.NET MVP .NET, OpenStreetMap, iOS, OS lover, father of 3 daughters. Snowboarder wanna be. These tweets are my own and don't represent Esri2,211 followers | Follow
Kate Chapman
Director at @hotosm. I love teaching tech, #OpenStreetMap, #GeoGlitterDomination & chickens. I believe #opendata can save the world. World up!2,175 followers | Follow
ZoomProspector.com
ZoomProspector helps businesses find the right location to startup, expand or relocate anywhere in the USA using demographic, geographic and real estate data.2,173 followers | Follow
Ed Parsons
Google's Geospatial Technologist, a Mapping Geek and proud of it !2,173 followers | Follow
Adam DuVander
Executive Editor, ProgrammableWeb. Author, Map Scripting 101. Lover, APIs.2,114 followers | Follow
Open Geospatial: OGC
The OGC is an international consortium where members participate in a consensus process to develop publicly available geospatial standards.2,033 followers | Follow
Valerie Yakich
Geospatial research and development • GIS • I'm passionate about analysis, visualization, and interdisciplinary synergies. Opinions are my own. 2,032 followers | Follow
NAVTEQ NN4D
Become a member of the NAVTEQ Network for Developers and begin exploring technical resources and tools2,008 followers | Follow
Gene Becker
Mobility, media, ubicomp, augmented reality, social stuff, invisible stories, infinite games, aurora digitalis, guitars.1,921 followers | Follow
Dave Bouwman
Coding CTO: C#, ESRI GIS, ASP.NET MVC, Flex, jQuery, Ruby on Rails1,909 followers | Follow
Jon Sorensen
ITS Engineer, discussing transportation technologies, Intelligent Transportation Systems (ITS) and next-gen mobility solutions.1,901 followers | Follow
GPSTracklog.com
Follow me for GPS news briefs that don't make it to GPSTracklog.com!1,887 followers | Follow
Morten Nielsen
Silverlight MVP. ESRI XAML APIs Dev Lead. GIS, API's, XAML, .NET, Windows Runtime, Silverlight, Windows Phone.1,880 followers | Follow
Sensors & Systems
Covering the interconnected networks of sensors and systems that monitor and analyze our world to adapt to global change.1,865 followers | Follow
Joe Francica
Editor, Directions Magazine; Writer, Internet broadcaster on location intelligence, geospatial, LBS, augmented reality, GIS; runner, tennis hack1,858 followers | Follow
Sarah Williver
Two active boys dominate my exciting, challenging life. Innovator, 25/8 technology geek...Outdoor enthusiast .. I love extremes!1,825 followers | Follow
GPSReview.net
The twitter presence for GPSReview.net Ask us any GPS questions you have.1,788 followers | Follow
Christopher Osborne
Big data, visualisation, maps, product. Founded WhereCampEU. Digital Advisor to Mayor of London. Big Data Product Manager at AlertMe.com1,757 followers | Follow
Jason Birch
Passionate about open data, geospatial technology and the web. Live and work in beautiful #Nanaimo. Opinions my own! (not speaking for employer)1,739 followers | Follow
Peter Batty
Geo technologist, Founder and VP of Ubisense, ex CTO of Intergraph and Smallworld, world traveler, photographer1,719 followers | Follow
LBS Mobile Services
Location Based Services (LBS), Telematics, Social Media, and Mobile Advertising technology platform consulting.1,681 followers | Follow
Navigation News
The latest on all the news in the GPS and Navigation industry from Networks In Motion1,599 followers | Follow
Nick Black
Founder of CloudMade, helping mobile games developers use location to build killer apps. OpenStreetMap advocate/activist since '06.1,596 followers | Follow
michael GOULD
GIS professor and Global Education Manager for ESRI. I focus mostly on projects in Europe, Middle East and Africa (EMEA). URL below is my non-Harley.1,588 followers | Follow
George Muammar
#GIS #mobile #ict4d #m4d. Palestinian humanitarian pacifist beekeeper. #Environment & #HumanRights Activist. #FoodSecurity & Vulnerability Analyst @WFPVAM @WFP1,573 followers | Follow
got geoint?
got geoint? is the official blog of the United States Geospatial Intelligence Foundation (USGIF)1,553 followers | Follow
State of the Map
The State of the Map is the annual conference of the OpenStreetMap Foundation. 2012's event will take place in Tokyo, Japan from Sept 6 to 8th.1,540 followers | Follow
Danny Dorling News
Latest news about Danny Dorling, Professor of Human Geography at the University of Sheffield, and author of Fair play.1,524 followers | Follow
AGI GeoCommunity
AGI GeoCommunity is the UK's leading GI event bringing together all the participants in our GeoCommunity. 18-20 Sept '12 Tweets from the conference team!1,509 followers | Follow
Gretchen Peterson
Author of cartography books and long-time GIS consultant focusing on analytics and map design1,503 followers | Follow
Matthew Everett
I'm a GIS assistant, geography and linguistics student, and a trained amatuer photorapher. I also really like technology.1,490 followers | Follow
Bjørn Sandvik
Map and web developer at Norwegian Broadcasting Corporation (NRK). Views expressed are my personal and not those of my employer.1,478 followers | Follow
Cian Dawson
Tweeting about geoscience, groundwater, plain language science communication, gov web best practices, gov/public science, and gov20. Opinions are all mine.1,470 followers | Follow
VerySpatial
Podcast and blog focusing on Geography and geospatial technologies.1,451 followers | Follow
Jesse Rouse
Geography, geospatial, tech, archaeology...yup, that is about it for me.1,450 followers | Follow
Claudio Schapsis
Chief Georilla Officer - Georillas - Location Based Marketing http://georillas.com LBS expert, mobile marketing, Location technology evangelizer & speaker1,423 followers | Follow
Reid Beels
Designer, developer, geonerd, community organizer, and generally nice guy. Works on @calagator, @osbridge, @wherecamppdx, @paydici, & more.1,406 followers | Follow
Josh Appleman
Self-Starter, Utilities, GIS, GPS, Mapping, Trimble Utility Field Solutions, Electric, Gas, Water, Wastewater, Wind1,374 followers | Follow
Bill Dollins
Dad. Small business owner. Programmer. Geo-geek. Fascinated by history and the concept of graceful decay. md5: 1c9bd353b65a5d91c44ee13c3641f4b81,363 followers | Follow
Timothy Hales
Esri Support Analyst. East Carolina University Student: Business Education - IT. Certified Esri Desktop Professional. Tweets are my own!1,358 followers | Follow
Portland Flaneur
Native Portlander, web coder, photographer, writer, railroad historian, walker, flaneur1,348 followers | Follow
David Chang
COO at WHERE, experienced product/marketer @ both B2C and B2B startups1,329 followers | Follow
Travis McCutcheon
graffiti: Student of the startup. Helping take ideas to market. Improving existing solutions. Designing innovative strategies for product development.1,315 followers | Follow
Mike Hogan
Program Manager - User Advocacy Group, Support Services @ Esri, Tech updates on: ArcGIS Server/Desktop/Explorer/Online, and what's happening around Esri.1,300 followers | Follow
Dawn Wright
Chief Scientist of Esri, also Oregon State University GIS/oceans professor on leave, cyclist, ocean mapper, geek, Lego maniac1,284 followers | Follow
Eddie Hanebuth
My company writes tutorials. Topics include;(mostly) GIS, with new projects for Factory Automation (Programmable Controllers) Geeky but fun..1,278 followers | Follow
Paul Ramsey
1,262 followers | Follow
Geovative Solutions
GPS audio tours: Discover, create, promote, share & sell GPS-enabled GeoTour guides that bring points of interest to life for travel destinations worldwide.1,229 followers | Follow
Roger Diercks
Geospatial technologies, meteorology in a previous life. All thoughts and opinions are mine and mine alone.1,222 followers | Follow
UMapper.com
The easiest way to create, distribute, track, monetize online maps. See wwww.umapper.com for more info.1,218 followers | Follow
Bern Szukalski
Esri product strategist and technical evangelist. On a good day I'm making a map. On a great day I'm above 9,000 feet or underground.1,210 followers | Follow
Dane Springmeyer
Mapper, ecologist, programmer, climber. Work: @mapbox + @developmentseed1,188 followers | Follow
Dave Riddell
Environmental scientist and educator | Musician and photographer1,180 followers | Follow
Igal Koshevoy
Biz-Tech Consultant: Ruby, Python, UNIX, DevOps. Open source contributor & community organizer: @pdxruby, @pdxfunc, @pdxdevops,@calagator, @osbridge, @e_pdx.1,177 followers | Follow
Marten Hogeweg
Product Manager Esri Geoportal Server & ArcGIS Editor for OSM, GIS, interoperability, tae kwon do, chickens, making music out of a brass tube1,176 followers | Follow
SeanGorman
Founder at GeoIQ - paleo map nerd trying to create an alternate reality1,174 followers | Follow
Jithen (J) Singh
Senior Technical Evangelist, GIS Technical Solutions Team, Eagle Technology Group Ltd (Esri New Zealand Distributor)1,165 followers | Follow
Shawn Bichsel
Nonconformist / Fly Fisher / GeoSpatial Practitioner / Socical Media Maven of the Trailer Park1,158 followers | Follow
Christopher Thomas
Early adopter of GIS, always looking to identify new trends, enjoys learning of others success, and evangelist.1,158 followers | Follow
Steven Johnson
A generalist in a world of specialists. Aspiring polymath, geospatial geek, OpenStreetMap, China & Chinese, new music, gardening & native plants, foods.1,149 followers | Follow
Philipp Kandal
skobbler co-founder. Mobile enthusiast. Blog: http://www.apphil.net1,135 followers | Follow
Michael Stoddard
Geographer, cartographer, unusual unit of measurement (http://bit.ly/qpSyUU)1,123 followers | Follow
Martin Copping
Business Development Manager, Esri Partner Network - Cloud & Mobile Solutions.1,118 followers | Follow
Brent Jones
Global Marketing Manager Survey/Cadastre/Engineering at Esri, High Accuracy GIS, Land Administration, GPS, Civil Engineering, Cadastre1,097 followers | Follow
josephkerski
The spatial perspective can transform education and society through the use of Geographic Information Systems for instruction, administration, and policy.1,094 followers | Follow
marybethlowell
I manage PR for TeleNav (@telenav) - wireless GPS technology. Opinions I share here are mine alone though.1,069 followers | Follow
Michelle here
Moved from Boulder to Colorado Springs. Stopped working in GIS, trying to stay self-employed. I travel and see lots of music concerts!1,069 followers | Follow
Steven Feldman
Wannabe digital entrepreneur and mentor with a focus on geo and government. Passionate about Arsenal, politics & Judaism. My links http://about.me/stevenfeldman1,066 followers | Follow
Beat the Traffic®
Making your commute less painful since 2001. Real-time traffic maps, traffic cameras, predictions. Let's make road driving more enjoyable.1,034 followers | Follow
John Niles
Commenting on transportation, communications, & spatial issues, with emphasis on improving beneficial impact per dollar ...more bang for the buck.1,033 followers | Follow
Carlos Silva
GIS & Mapping Specialist based out of Vancouver BC. Likes maps. A lot. Member of the URISA Vanguard Cabinet, representing URISA's young professionals.1,032 followers | Follow
Sean Gillies
Seven at one blow. I design web resources and representations for geographic and historical applications at @isawnyu.1,026 followers | Follow
Brian Timoney
The world is multivariate; geography, economics, and visualization clarify. I move, munge, and map data.1,005 followers | Follow
GeoMarketing Ticker
Journalist and Reporter for the fastest ressource in Geo1,001 followers | Follow
David Cardella
ESRI Product Manager for iOS, Android and Windows Phone 7, iOS Development, Java, EDN, Developer, GIS, mapping, Golf nut990 followers | Follow
Jeff McKenna
Director of Gateway Geomatics: publishing online maps with MapServer, offering support, training, and custom development....and generally having fun in life.988 followers | Follow
Katie Filbert
Board member @wikimediadc, @wikidata developer @wikimediade, geonerd, freelance web developer978 followers | Follow
Carla Wheeler
Editor of Esri's ArcWatch online and email mag and Esri's defense and intelligence marketing writer.977 followers | Follow
jubal harpster
Co-founder of SpatialDev.com, WhereCamp organizer and general Seattle GeoNerd. Father, Cyclist. Crazy Maker.973 followers | Follow
Ian Robinson
A technologist specialising in GIS. A past expert in AutoCAD, Map and Civil 3D now concentrating in GIS and LBS. My views may not be that of Cadcorp970 followers | Follow
Josh Finnie
I am an Application Developer at @Koansys and a graduate student at @CCSU studying GIS. Interested in python, geolocation, photography, ham radio and cooking.969 followers | Follow
Jeff Shaner
Lead Program Manager at ESRI, iPhone/iPad/Android and Windows mobile apps and APIs. GIS and Mapping freak, love golf and hockey too!958 followers | Follow
Ross M Karchner
Django + GIS dev at @cfpb, editor @dctechevents, blogger. Enthusiastic about beer, food, and music.954 followers | Follow
Muki Haklay
Professor of Geographical Information Science at UCL, directing the Extreme Citizen Science group.936 followers | Follow
Skyhook Wireless
Worldwide leader in location positioning, context and intelligence.933 followers | Follow
Pictometry
See Everywhere, Measure Anything, Plan Everything. Geospatial Centric Platforms and Solutions. The world's supplier of Bird's Eye imagery.923 followers | Follow
Brian Sullivan
GIS, Utilities Project Manager, Technology Advocate, Father of Two, Husband, Northern Colorado895 followers | Follow
Allan Laframboise
ESRI EDN .NET Technology Lead, ArcGIS Programmer, GeoWeb Developer, Canuck, Pro Mountain Biker, Husband, Dog Owner, Supporter of all things good...894 followers | Follow
Optech Incorporated
The Lidar Company. The worlds leading lidar (laser radar) technology company with 35+ years of experience from the depths of the ocean to the surface of Mars.888 followers | Follow
Justin Cole
I am a senior GIS analyst and my main focus is environmental modeling877 followers | Follow
philhenley
Subsurface Geospatializer. Wearer Of Glasses. Development Manager for FrOG Tech. Tweets are my own865 followers | Follow
longcreative
Journalist, geographer, traveler, company owner. Co-Founder of @HuntersDB854 followers | Follow
John Steffenson
ESRI Fed. Civilian, Intl Govt and Non-Profits, father, husband, friend, traveler, geographer, wine collector. The views expressed here are mine and mine alone.854 followers | Follow
Tyler Bell
Geo Technologist, Open Source Enthusiast, ATM User, Bounder. Factual Product Lead.843 followers | Follow
David Sonnen
Geo-geek, Kayak/mountain guide, bike addict, photographer, naturalist, writer, system architect, learning social media841 followers | Follow
Point of Beginning
POB serves the surveying and mapping profession as an informative national publication, website, digital magazine, enewsletter, and bulletin board, www.RPLS.com830 followers | Follow
Hexagon Conference
Join us for Hexagon 2012 #hex12 in Vegas, 4-7 June; Calling all customers of @intergraph @ERDAS @MicroSurvey @HexMet @HexMetrology @LeicaGeosystems @SISGRAPH817 followers | Follow
François Bergeron
Vice-President, Operations at KOREM | Geospatial Specialist | GIS | Business Intelligence | Platinum Partner Pitney Bowes Software | Google | Alteryx797 followers | Follow
Markus Tripp
Loves his MacBook Air, HTML5, CSS3, JavaScript, JQuery, NoSQL, MongoDB, Mobile, Android, Augmented Reality, Java, great design. Product Owner at Fabasoft.794 followers | Follow
Jan Clement
Innovation Researcher 3D-GeoInformation for knowledge of the Sustainable Environment. More info on LinkedIn http://nl.linkedin.com/in/geojan793 followers | Follow
Aparecido Leite
Cartographer and human content aggregator on Geospatial Technology, GIS, GNSS, Cartography, Geoweb, LBS, Geobiz, Geoscience, and related areas.792 followers | Follow
Merrick MARS
Information about Merrick's MARS® software solution - LiDAR visualization, data processing & analysis tools for your enterprise!779 followers | Follow
Chris McClain
GIS Guy, Dad, Husband, Foodie, and Disney Fan in no particular order!771 followers | Follow
Karen Capria
Fan of the weather, cool maps, and data visualization. Purple is my tailgate color. Media inquiries for Esri. Opinions are my own.753 followers | Follow
Steven Romalewski
Thinking about the future of geography while managing geoweb projects and GIS/spatial analysis research, with a focus on urban dynamics.748 followers | Follow
davescheirer
Digital storyteller (Marketeer and Web Producer at Esri), Lebowski fan. Past: Rocket Scientist. Laughter is the best medicine. Good wine is a close second.726 followers | Follow
Marc Prioleau
Location services, GPS, wireless, mapping, M&A, Squaw Valley, bike riding sometimes726 followers | Follow
Lovell Johns
Map making company working with businesses, government and running an online map shop mapsinternational.co.uk721 followers | Follow
Meg Stewart
Educational technology. Ghost tweeting. GIS. Mommying about. Grant writing. In no particular order.715 followers | Follow
Jeff Harrison
Entrepreneur living in DC area working on geosocial, cloud computing and democratic access solutions.711 followers | Follow
Kenneth Field
research cartographer; cartonerd; geogeek; @CartoJnl editor; snowboarder; Nottm Forest fan; drummer; views mine not my employers. I don't represent anyone.708 followers | Follow
Thierry Gregorius
All things Data, Web, Geo. Fellow of the Royal Geographical Society. Formerly in global oil exploration, now Head of Data for a large B2B information business.704 followers | Follow
joe larson
GIS, opensource, n00b geohack, wildland fire, affinity for Brasil.704 followers | Follow
Amanda Taub
GIS Analyst, GISP, WAURISA Secretary & Marketing Chair, Lone GIS Professional, jewelry maker, Celtic music lover, best of all: wife, mother. Tweets are my own.699 followers | Follow
Dylan Hettinger
Turning data into information never gets old. Neither does climbing, cycling, GIS or open source tools!692 followers | Follow
Axel Quack
Director Innovation Management at Pixelpark. Urban theorist, city hactivist and cultural explorer.691 followers | Follow
Mick Morrison
Archaeologist at Flinders University (Adelaide). My research focuses upon the Indigenous history of Cape York Peninsula, Australia.687 followers | Follow
InteractiveGIS
Powerful,fast,accurate,and efficient decision-making tool. Web connection and a browser enables access to spatial data anytime,anywhere.678 followers | Follow
Anne Mosher
State spatial theorist, geographer of memory, historian of urban infrastructure, Phillies Phan, Yesfan & a Mommy.676 followers | Follow
Mike Olkin
GIS Administrator, Town of Amherst, MA. Interests: Parenting, Judaism, GIS, Databases, Distance Running, Baseball, Baseball, Baseball!675 followers | Follow
Dan Gilmartin
yankee fan livin in boston, marketing where on mobile phones, etc, etc.669 followers | Follow
Jim McAndrew
OpenStreetMap, maps, bicycles, cartography, traveling, water resources. GIS Web Programmer for the NationalMap.gov668 followers | Follow
Sterling Quinn
Esri product engineer on the ArcGIS Server development team. Opinions expressed are my own and do not necessarily represent those of Esri.666 followers | Follow
Michael Schlosser
Professional Engineer and experienced geospatial guy focused on CAD/GIS integration, BIM and Engineering GIS.664 followers | Follow
Joseph McGehan
Principal Consultant at GIS Intelligence Pty Ltd. Certified ArcGIS Desktop Professional. Spatial Solutions Architect, Lecturer, Map Maker and Food-Monster647 followers | Follow
Geo Mentor
638 followers | Follow
Martijn van Exel
Geospatial Omnivore. I take on all challenges that have 'where' in them. Public transport geek. OpenStreetMap addict. OSM US Chapter board member.625 followers | Follow
Matt Perry
U-T San Diego Information Graphics Director. Ball U + Times-Picayune alum. Opinions are my own + usually involve graphics, data, beagles, Isuzu VXs, the 70116.623 followers | Follow
Paul Hallett
CEO of @schmap. I'm a US and China based Oxford math grad - an occasional clear thinker, with a passion for big data, extreme hiking and real ale.614 followers | Follow
Joshua McNary
Marketing professional in Iowa (via Cleveland); Christianity/Lutheranism, political philosophy/libertarianism, personal/biz dev, computers, geo, hockey, family603 followers | Follow
Shaun McDonald
Ruby on Rails developer in London, who also cycles and maps for OpenStreetMap584 followers | Follow
Shoaib Burq
Ocean to disaster mapping and all things geo-temporal. CEO & Co-founder at http://spacialdb.com574 followers | Follow
ISCIENCES, LLC
ISCIENCES, LLC provides expertise on global data sets, data viewers, and our environment.570 followers | Follow
Matt Priour
GIS + Javascript junkie, dad, husband, wildlife biologist, and emergency vet tech568 followers | Follow
GeoVector Corp.
562 followers | Follow
machinecontrol
News and technology updates for 3D machine control technology used in construction, mining, landfills and dredging. Also a bit of photo/video tech news561 followers | Follow
Aalok Jariwala
#ICT #MobileMoneyTransfer #microfinance #ruralbanking, #cloudcomputing, #LocationBasedService (LBS) Context-Aware Mobilility #entrepreneurial #socialservice559 followers | Follow
Dawn Killian
cycle-Chic commuter.Beginner Bianchi cyclist.Organic..Zennish Vibrant.Manx & a Scotty.Tri-ing to swim-bike-run to a fitter self. Air-Cooled & TDI WVO.GIS549 followers | Follow
Chris Campbell
Lead Geospatial Model Developer w/ RMS, former Map Content Manager at Telenav and former Database Engineer at NAVTEQ, father, husband.547 followers | Follow
Luc Vaillancourt -En
@SPATIALYTICS CEO (GeoBI and Spatial ETL), living in Quebec City. Enduro addict, proud Soccer Dad. Twitter in French @lucvaillancourt547 followers | Follow
Aitor Calero García
Project Manager and Consultant, with special interest in Technology, GIS and everything in between. Love soccer & countryside544 followers | Follow
Jeremy Morley
Geospatial Science Theme Leader, Nottingham Geospatial Institute, University of Nottingham539 followers | Follow
Suzanne Mavoa
geography art space dance research coastal health music bass GIS photography science geospatial hooping538 followers | Follow
Nick Furness
Esri Developer Network Technical Lead. ArcGIS Developer. New York dog owner. Tinkerer. Fiddler. East Village Policeman. (Opinions my own etc. etc.).536 followers | Follow
Robert Coup
@Koordinates founder, open source contributor, map geek, sailing enthusiast.526 followers | Follow
Geoff Zeiss
Geoff Zeiss has more than 15 years experience developing enterprise geospatial solutions for the utilities, communications, and public works industries.524 followers | Follow
Cicero Team
The Geography of Democracy: We tackle projects and research related to gerrymandering / redistricting issues, legislative district matching, and voters' rights495 followers | Follow
Caitlin Dempsey
Geographer and editor of GIS Lounge. For geonews follow @geospatialnews.490 followers | Follow
Simon O'Keefe
Geospatial Systems Developer, open source enthusiast, small business owner483 followers | Follow
Rafa Gutierrez
Owner, Grafa Geographic Design. Geonerd. Ride a Surly, pull a Burley. Orienteer, KAP hobbyist, and papa of two future presidents.475 followers | Follow
Jeff Konnen
Mapping, Spatial ETL, GIS, FME, #geonerd, http://www.geoportal.lu471 followers | Follow
Paul Schonfeld
teacher and learner, mapper, scientist, wisconsinite, media maker460 followers | Follow
GeoGraffiti
Enabling people & SMB to record-n-publish Voice Marks - a virtual voice billboard, geotagged to specific point of interest, audible via any mobile phone460 followers | Follow
Chris Rolling
Father, Husband, Entrepeneur, mountain biker, trail runner and endurance racing enthusiast457 followers | Follow
Dan Wright
Co-Owner/CEO of Inferno Technology Group LLC, Career Firefighter;Love to BBQ448 followers | Follow
Frederic Bruneteau
Strategy in the age of GEO-CONNECTED MOBILITY - LBS (Location-Based Services) - M2M (Machine-to-Machine) - ITS (Intelligent Transport Systems) & Telematics446 followers | Follow
TeachMeGIS
ESRI Authorized Partner Education Centers, GIS Training Brought to You!442 followers | Follow
Josh Sheldon
Project manager/Game Developer in the teacher education program lab at MIT.438 followers | Follow
Geoweb3d Inc.
: Geoweb3d is a new kind of virtual globe. It combines gaming-quality graphics and performance with the full power of a geospatial application.429 followers | Follow
zone twelve
Geospatial Technology, Transportation, Air Quality, Recreation Management, Native Issues, Social Media, Open Source, Photography & Android user420 followers | Follow
Omar J. Peters
A transportation plannerd, lover of cities and Dayton transplant.405 followers | Follow
Gregory L Gunther
Father, husband, geogeek, Christ guy, mountain bikes, workouts, building stuff, sports freak (not soccer), views are my own.395 followers | Follow
Alan Majer
Focused on allowing people to age independently and stay in touch loved ones via technology that can sense, think, move or interact. I'm the founder of aah.ca381 followers | Follow
Alper Dinçer
Ordinary Geo Web Developer working on Web, Open Source and ESRI related projects.374 followers | Follow
Sathya Prasad
Esri, Geo Web Developer, Open Source, Emerging web technologies, Lakers372 followers | Follow
Fred Janssen
Outdoorsy type that spends most of his time doing business intelligence, web development, GIS, GPS, and all the stuff that ties it together...366 followers | Follow
Jeff Hobbs
San Jose Water Company GIS Coordinator, (very) Part Time Blogger, Open Source Advocate, Husband363 followers | Follow
molly vogt
gis geek, public servant. always up for a challenge. unless it involves eating insects or swimming in shark tanks. those are all yours, friend.352 followers | Follow
Arjen Vrielink
geospatial, RemoteSensing, OpenSource, Moodle, theSwarm, Biking(CX/MTB/Race)351 followers | Follow
Chris Sergent
GIS Custom Apps for the Web, HTML5, CSS, JavaScript Frameworks, .NET, jQuery, Dojo, and Open Source351 followers | Follow
Rose Medina
Geogeek who is a mother to two boys and wife to a patient husband. Opinions are my own.351 followers | Follow
Graeme Browning
Spatial Architect & GISP-AP interested in Esri, Google, Open Source & COTS GeoStacks, Zoology & Genealogy344 followers | Follow
Shelby Johnson
Native Arkansan, State GIO, outdoor adventurer, cyclist, motorcyclist, husband, father and hopeful contributor to quality of life and success in Arkansas.338 followers | Follow
Sean Blakey
Senior Developer, AmazonFresh. Bookworm and geek. Enjoys beer and cider. PGP fingerprint:5C5D F448 F9A7 28E9 EAC0 CA89 23C7 F5EC 6D3F D60D331 followers | Follow
Royce Simpson
ArcGIS Server/Flex API junkie and wine geek walkin' the digital road331 followers | Follow
Michel Gilbert
I'm a GIS guy at work and a free time neo-geographer. SoLoMo type guy...327 followers | Follow
PublicEarth
We're the Wiki For Places, dedicated to delivering interesting, unique, and up-to-date place information in a personalized way.319 followers | Follow
Sean McGinnis
IT Specialist @ the New Jersey Office of GIS with interests in Enterprise GIS, Law Enforcement and other geographic nerdy goodness...318 followers | Follow
David Puckett
GIS Developer and CEO\CTO\CFO\Owner\President\Grand Poobah of Bright Rain Solutions315 followers | Follow
johnbfagan
Head of Software Engineering, Axon Active AG. Scrum Master. Agile & Lean. Formerly of Bing Maps and Multimap. Lives in North Walsham, Norfolk and loves it.303 followers | Follow
GeoWeb Conference
The information sharing conference - join the discussion #geoweb and visit www.geowebconference.org300 followers | Follow
Andy Maracini
Owner of Superior GIS Solutions LLC, GISP/AICP, building new business, cyclist, fisherman, volunteer, Yooper!296 followers | Follow
Dr. Thomas Ott
self-employed geographer and IT consultant (GIS, geomarketing, maps, cartography, databases), classic rock addict, father of 4, passion for movies, sports, DIY290 followers | Follow
Hugo Santos
Forest engineer by day...A Geospatial Junkie by night! @Geocamp Unorganizer287 followers | Follow
Tim Linsey
e-learning, learning, learning spaces and technologies, open street mapping (OSM), local history, cycling271 followers | Follow
The Real Robb Hodges
Enjoy soccer, the MLS, the Bundesliga, Oakland Raiders, LA Galaxy, VFB Stuttgart, LA Dodgers, cigars and GIS266 followers | Follow
Benton Yetman
Location obsessed. Designer/developer using maps to solve problems that matter... Director @penbaysolutions and yes there are robots involved.261 followers | Follow
Francisco Urbina
I survive on a diet of tech biz, tech gadets, T-shirts, Sydney FC and Minimal Electronica Music oh.. and just a bit of GIS!260 followers | Follow
Darren Higgs
Graphic designer for @AmericanClay, @TEDxABQ, @carriewilliar, @appcitylife. Avid hockey and soccer player. Canadian in the US. Go Canucks!260 followers | Follow
Michael Terner
GIS consultant; father of 3; golfer. Whether on work, or otherwise, my own opinions.251 followers | Follow
Christy Nieman
I make maps using largely FOSS applications. Involves some scripting, lots of data crunching and cartography.247 followers | Follow
Grant McKenzie
Pop Punk Music, spatio-temporal Geography, Cream Soda Slurpees241 followers | Follow
Abdiel Quezada
GISP, GIS developer, Google and Stumble a lot, collect quotes and watch documentaries. Movie fanatic!237 followers | Follow
Jason Siebrecht
GIS guy by day, soccer dad by night (and most weekends). Work as GIS Manager in County Gov't. Volunteer a lot of time with Prairie Soccer Club.237 followers | Follow
Peter Southwood
An English GIS professional having fun spreading the Geospatial word around the world236 followers | Follow
Aaron Drake
GIS Coordinator, Happily Married, Loving Father to 3 Year Old Twins, and Avid Surfer...225 followers | Follow
Victor Caballero
Journalist, inventing the interactive infodatavizgraphic media in my spare time216 followers | Follow
Greg Rybarczyk
As a scholar and consultant I attempt to answer the question; why do people choose to bicycle and walk, and where do they go?209 followers | Follow
Thomas Emge
Applications Prototype Specialist at ESRI, technology critic and always curious208 followers | Follow
Leslie Roundy
Recruitment Marketing Specialist at Esri. Have a question about our career opportunities? Ask me or follow @EsriCareers.194 followers | Follow
Tanya Buckingham
mapmaker. day job: www.geography.wisc.edu/cartography, love: www.nacis.org, spare time: www.mapgiving.org194 followers | Follow
WhereCamp Montréal
WhereCamp Montreal the geocurious unconference - managed by Sylvain Carle @froginthevalley & Luc Vaillancourt @l_vaillancourt - next edition is Oct. 11th 2011190 followers | Follow
Jen McCarthy
Esri Product Marketing - The postings on this site are my own and don’t necessarily Esri’s positions, strategies or opinions.187 followers | Follow
Steve Goldman
State Wildlife Agency GIS Manager interested in web development, usability, and mobile content delivery, Cyclist, Runner, Dad184 followers | Follow
David Runneals
I'm the @storycountyiowa GIS Intern for @mapnerdmatt. I attended the 2009 & 2011 esri UC, the 2009 esri EdUC*, and the 2011 IGIC Conference*. (*Presented)182 followers | Follow
Nathan Strout
Tech. manager at the RI at the Univ. of Redlands. Loves cycling, triathlons, and spending time with his wife and 4 furry kids.172 followers | Follow
Mark Ireland
Product specialist, product evangelist and training manager at Safe Software169 followers | Follow
Björn Brala
Lead developer GeoStart. Proctor for Google Developer Qualification. Google Maps is my game. Getting more Geo every day...167 followers | Follow
Arno Bosse
164 followers | Follow
Bernie Murray
I'm a project manager working in IT & GIS. I love all things technology. I collect topographical maps & used to be in the media biz.161 followers | Follow
Alan Beiagi
Married with children; Live outside Boston; Dir. of Products at DataXu157 followers | Follow
MP2K Mag MapPoint
MapForums and MP2Kmag MP2K Magazine the Magazine for MapPoint151 followers | Follow
Jill Clark
Freelance tech writer specialising in GIS and geotechnologies. Keeper of 1 border collie and 4 hens.150 followers | Follow
Kate Chapman
Geonerd/Coder/Maploser/@geocommons'er/OSMer/OpenSource/OpenData. I love geonerd jokes more than the average person. World Up!150 followers | Follow
Aaron Stephenson
GIS Specialist, DBA, Sys Admin, college football fan, history buff.143 followers | Follow
Theron Steineck
142 followers | Follow
Brett Lord-Castillo
Geo-evangelist and GIS Programmer at the St Louis County Office of Emergency Management139 followers | Follow
Susan Hmel
Working Mom of 3 girls, GIS Application Developer/DBA, and a million other things.138 followers | Follow
Craig Feuerherdt
geospatial, openstreetmap, os gis, postgis, Cartography, mapping, water management, orienteering130 followers | Follow
Kristin Halberg
life coach, cabin proprietress, Passionate about social change, living vitally, & being 'Super Auntie' to 11 kiddos under 11.111 followers | Follow
Perry Tancredi
111 followers | Follow
Martin Pinnau
Enthusiast of geography, technology, motorsports, politics, and reality TV. I tweet a lot. Opinions are my own.108 followers | Follow
Simon Lutman
I'm the real Simon Lutman. Map man. Comfortably numb. Taking the slow path through North Yorkshire100 followers | Follow
Jesse Theodore
writer, public relations professional, and lover of fiction and all things story-telling.98 followers | Follow
SpringerCartographic
92 followers | Follow
Robert Acker
Former rocket scientist turned consumer marketer now heading a start-up that will change how drivers get online info83 followers | Follow
kellycelia
french/american map nerd from so cali living in the south of france.69 followers | Follow
tabascojack
Architecture & Engineering Drawing teacher at Wheeler High School.69 followers | Follow
Erin Cooley
A Christian husband, dad, and friend. I work for Penn State as a marketing associate for our online programs and a scuba diver with a dive shop in Altoona Pa.69 followers | Follow
Colleen Gormley
69 followers | Follow
GeoPublicPolicy
64 followers | Follow
Outside Spatialist
Just a guy with an unnatural infatuation in all things GEO & making the world a better place 1 map at a time!59 followers | Follow
Mark Brown
56 followers | Follow
Steve McKinney
I am a GIS and spatial technologies enthusiast in Florence, AL.56 followers | Follow
Douglas Flewelling
PaleoGeographer, doing and teaching digital geography for 30 years52 followers | Follow
Michael Okupinski
Co-Owner of The Community Tap, Greenville, SC. Love Beer(obviously), Mountain Biking and my lova45 followers | Follow
Terry Ross
40 followers | Follow
bertdelongue
GIS engineer, pitching the Geospatial Web to build tomorrow's Digital Earth!34 followers | Follow
James Mason
Emerging technologies as they relate to neighborhoods, cities, cars, and homes of the future; especially people-monitoring technologies.31 followers | Follow
Jason Harshman
25 followers | Follow
Andreas Mueller
22 followers | Follow
Paul Montgomery
21 followers | Follow
Michael Reali
A more sound me helps build more sound people around me, so I become superfluous. Good!21 followers | Follow
Julie Maitra
11 followers | Follow
Curated by Valerie Yakich
Inclusive list of geotweeters (broadly defined). Feel free to suggest additions that will be added to "geo4"
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I recommend @swiss_geoportal for @GeoEntelechy's Geo list on Listorious http://bit.ly/1HUzBw because...
