It's with great excitement that we introduce the third annual AlwaysOn East Top 100 private companies. The AOE100 represent the top emerging companies from the East Coast that are demonstrating significant market traction and pursuing game-changing technologies in on-demand computing, digital media, and greentech.

The AlwaysOn editorial team, along with partners at the Blackstone Group, KPMG, Silicon Valley Bank, Sonnenschein, and industry experts across the globe, scoured the entrepreneurial community to identify the top 100 private companies that are taking old notions of doing things and forging solutions that will lead to industry shake-up and huge value-creation opportunities.

"After examining the companies that are on the AOE100 list, it's obvious that innovation is not only alive and well on the East Coast, it's accelerating in economic power and scope." says Tony Perkins, founder and editor of AlwaysOn. "The companies certainly represent some of the highest-growth opportunities in the private company marketplace."

The winners of this competition will be officially honored at:

 Venture Summit East 2010
Where the Big Money Meets the Big Ideas
June 21st-23rd, 2010
Harvard Business School
Boston, MA

To see current program, reserve your ticket, or learn more about the Venture Summit East, please click here.

The AlwaysOn East 100 Top Private Companies

AOE100 Overall Winner: Foursquare
Category: Consumer Internet
URL: www.foursquare.com
Headquarters: New York, NY
CEO: Dennis Crowley
Year Founded: 2009
Employees: ca. 25
Investors Include: Union Square Ventures, O'Reilly AlphaTech Ventures, angels
AO Take: Foursquare offers a rich, location-based gaming platform for mobile phones that encourages people to explore their neighborhoods and rewards them for doing so. Business owners use foursquare to engage their mobile customers, who are offered specials, discounts, and prizes, including loyalty rewards for customers who check in on foursquare.

Cloud and Infrastructure

Adaptivity
Charlotte, NC
www.adaptivity.com

Akorri Networks
Littleton, MA
www.akorri.com

CloudSwitch
Burlington, MA
www.cloudswitch.com

Leostream
Waltham, MA
www.leostream.com

LTech
Bridgewater, NJ
www.ltech.com

Nasuni
Natick, MA
www.nasuni.com

Panvidea
Stamford, CT
www.panvidea.com

RELDATA
Parsippany, NJ
www.reldata.com

SANpulse Technologies
Jersey City, NJ
www.sanpulse.com

ScienceLogic
Reston, VA
www.sciencelogic.com

Sonian
Needham, MA
www.sonian.com

Virtustream
Bethesda, MD
www.virtustream.com

VKernel
Andover, MA
www.vkernel.com

Consumer Internet

Altruik
New York, NY
www.altruik.com

AuthorsGlobe
Lexington, MA
www.authorsglobe.com

Bloson
Cambridge, MA
www.bloson.com

CitySquares
Boston, MA
www.citysquares.com

drop.io
Brooklyn, NY
drop.io

FamilyBuilder
New York, NY
www.familybuilder.com

Gilt Groupe
New York, NY
www.gilt.com

Goby
Boston, MA
www.goby.com

Groupon
Chicago, IL
www.groupon.com

HealthiNation
New York, NY
www.healthination.com

KZO Innovations
Reston, VA
www.kzoinnovations.com

Live Gamer
New York, NY
www.livegamer.com

OPEN Sports Network
Deerfield Beach, FL
www.opensports.com

The Resumator
Pittsburgh, PA
www.theresumator.com

RevZilla
Philadelphia, PA
www.revzilla.com

Viximo
Cambridge, MA
www.viximo.com

Where
Boston, MA
www.where.com

Digital Media

adfactory
Harrisburg, PA
www.adfactory.com

AdSafe Media
New York, NY
www.adsafemedia.com

AdSide
New York, NY
www.doclix.com

AppNexus
New York, NY
www.appnexus.com

appssavvy
New York, NY
www.appssavvy.com

Buddy Media
New York, NY
www.buddymedia.com

DataXu
Boston, MA
www.dataxu.com

Goom Radio
Jersey City, NJ
www.goom.com

Howcast Media
New York, NY
www.howcast.com

Innovid
New York, NY
www.innovid.com

Magnify Networks
New York, NY
www.magnify.net

Media6°
New York, NY
www.media6degrees.com

MediaMath
New York, NY
www.mediamath.com

Milabra
New York, NY
www.milabra.com

Millennial Media
Baltimore, MD
www.millennialmedia.com

Outside.in
New York, NY
outside.in

PerformLine
New York, NY
www.performline.com

PointAbout
Washington DC
www.pointabout.com

Pontiflex
Brooklyn, NY
www.pontiflex.com

Simulmedia
New York, NY
www.simulmedia.com

XplusOne
New York, NY
www.xplusone.com

Enabling Tools and Devices

DoubleVerify
New York, NY
www.doubleverify.com

iMedix
New York, NY
www.imedix.com

Invention Machine
Boston, MA
www.inventionmachine.com

Kaltura
New York, NY
www.kaltura.com

Medialets
New York, NY
www.medialets.com

MoFuse
Providence, RI
www.mofuse.com

NearVerse
Philadelphia, PA
www.nearverse.com

ORCA
New York, NY
www.orcaone.com

Peek
New York, NY
www.getpeek.com

Pixtronix
Wilmington, MA
www.pixtronix.com

Pubget
Cambridge, MA
www.pubget.com

RideCharge
Alexandria, VA
www.ridecharge.com

TimeSight Systems
Mt. Laurel, NJ
www.timesightsystems.com

TriNet
Bradenton, FL
www.trinet.com

Greentech

AtmosAir Solutions
Fairfield, CT
www.atmosair.com

BPL Global
Cranberry Township, PA
www.bplglobal.net

CoaLogix
Charlotte, NC
www.coalogix.com

EnviroTower
Toronto, Ont. Canada
www.envirotower.com

Hycrete
Carlstadt, NJ
www.hycrete.com

In-Pipe Technology
Wheaton, IL
www.in-pipe.com

Joule Unlimited
Cambridge, MA
www.jouleunlimited.com

Konarka
Lowell, MA
www.konarka.com

Oasys Water
Cambridge, MA
www.oasyswater.com

Persistent Power Systems
Boston, MA

Recycled Energy Development
Westmont, IL
www.recycled-energy.com

Solasta
Newton, MA
www.solastacorp.com

Suniva
Norcross, GA
www.suniva.com

WiTricity
Watertown, MA
www.witricity.com

SaaS and Enterprise

Aprigo
Waltham, MA
www.aprigo.com

CareCloud
Miami, FL
www.carecloud.com

Continuity Control
New Haven, CT
www.continuity.net

Desktone
Chelmsford, MA
www.desktone.com

Document Depository Corp. (DDC)
Philadelphia, PA
www.docdep.com

Fortisphere
Reston, VA
www.fortisphere.com

GlobalCrypto
Atlanta, GA
www.globalcrypto.com

HubSpot
Cambridge, MA
www.hubspot.com

In2Clouds
Charlotte, NC
www.in2clouds.com

innRoad
East Hampton, NY
www.innroad.com

Lumigent
Acton, MA
www.lumigent.com

Metastorm
Baltimore, MD
www.metastorm.com

Preparis
Atlanta, GA
www.preparis.com

salesElement
New York, NY
www.saleselement.com

SilkRoad Technology
Winston-Salem, NC
www.silkroad.com

Solvate
New York, NY
www.solvate.com

uTest
Southborough, MA
www.utest.com

Vgo Communications
Nashua, NH
www.vgocom.com

WordStream
Boston, MA
www.wordstream.com

Zmags
Boston, MA
www.zmags.com