Try: investor:"y combinator"

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"CM" (Consumer Stealth)

10gen

15desks, Inc

2NgageU Inc.

3GenLabs

ABS

Adchemy

Aitano

AltScale

Alvazan, Inc

appagic

Appature, Inc.

Appcelerator

Apperian, Inc.

AppFirst

Appian

Appirio

Applicationville

AppServices.net

Aprigo

Apsona

Aravo Solutions

Artha42 Technology Solutions Pvt. Ltd

ArtsApp

Atherton Advisors

Avecora

AWeber Email Marketing

Axcient

Behance

BiddingForGood

BIG Folio

bigWebApps

BiiCast, Inc.

BioKM

Bitmain Studios Inc

Blank Slate Factory, Inc.

Bleeding Arts, LLC

Blellow

Blist

BlitzLocal

BlueSky Local

Bolder Professional Placements

Box.net

Bright Edge

BroadSpire Inc

Bucketboo

Business Catalyst

Business Opputunity / Web 2.0

BusinessElite

BusyEvent | Tools for Event Management

Buyful

CallFire

Carbeion LLC

Carbonite

CareCloud

CareerNumbers

Casmiro

Catch the Best

Causes

Central Desktop, Inc

Chat Badge

Checkster

Circle 7 Software, Inc.

CitizenGroove

ClearMechanic

Clearspring

Cloud Sherpas

Cloudant

Cloudize, Inc.

Communispace

ConcepSys Solutions LLC

Concepta Systems, LLC

Conductor

Convert

Cozi

Crowdcast

CROWDPARK

Dabbleboard

Deeplake Ltd

DiamondTip.com

Digital Canvas

DoctorsTalk, inc.

drop.io

E3 SEO

Elation EMR

ElephantDrive

Emot.io

Enchronize

EnergySavvy.com

Engago Technologies Ltd.

ENuke Software Pvt Ltd

eRealInvestor

EventVue

EvoApp

Exelanz

Exvo.com BV

Fancy

Fididel

FillAnyPdf .com

Finavigation

Force Therapeutics

FossaTec Business Systems

FreeCause, Inc.

Fusion Inc.

GENWI

Get Out

Goodmail Systems

GrandOffice

Greenzu.com

Group Commerce

GuideSpark, Inc.

Huddler

iContracts

IKaru Projects

ImaginaryFeet

IncentAlign

Indus Net Technologies

InfiniGraph

Inkling Markets

Innovative Public Sector Web & Mobile Tools

InstantPresenter

Internacio

Internet Startup

Invitacia

Involver

iScripts.com

isocket

Issuu

IT Apps LLC

Job Alchemist

Jobvite

Juice Analytics

Kaluma Software, Inc

KarmaKorn

Kashless, Inc.

KickApps

Knexus

KODA

KONARCHS LLC

Kron-Service

LeadLog LLC.

LealtaMedia

LeapFILE

Licensing Planet, Inc.

LinkLarry

ListenLogic, LLC

Live Gamer Inc.

Live Gamer, Inc.

Livefyre

Local Dirt

Localot

LocalUp Solutions/YNot Advertising

Localytics

Loud3r Inc

MacroView Labs

Madre Software

Manawa Networks

market76

Mashape

Mashery

Matradee, Inc

MD Informatics Lab

Medio Systems

Meltwater Group

MiMedia

Mixpanel

Momentum Design Lab

Mona Lisa Style

Monadik

Mumboe

MutualMind

MyNewPlace

NewsCred

NewsGator

Neybor

NitroSell

nSyte Software

nuSage

Oco

OculusAI

oDesk

Okta, Inc

Olapic

Omnetic Inc.

OmniStrat

OneRecovery

Openomy

OpenView Venture Partners

Operative

OPOWER

Optask

Oritor

Paradigm Analytics

Pareto Networks

Pascal Metrics

Patch-tag

PathBuilder, Inc.

PawLinks, LLC

Pinkelk

PivotLink.com

PIX System

Pixable

Postling

Pravega Inc

Predictium LLC

psd2cssonline.com

Publictivity

PWRG (B2b Stealth)

Qgia LC

Quaris Corporation

QuesGen Systems, Inc.

Rally Software

rbidr

RentJuice

Rentomodo

Repfolio

RescueTime, Inc

Resonate Networks

resu.me

ResuWe

Revelation Inc

ReverbNation

ReviewMyWeb.com

RGlobe

RightFrame, LLC

RiseSmart Inc

RJMetrics

RTI

Runa Inc.

Rype

SaaSease, Inc

SayHired

Schoology

Sciosys

ScoutMetrics

Sendside Networks

Shape Up The Nation

ShowClix, Inc.

Signature9

SingleFeed

Skydeck

SmashFly Technologies

SnapLogic

SnappCloud

SocialDynamics

SOCIALtality

SocialVision Inc

Soft Gravity Inc.

Soft Illuminations, Inc.

Solertium Corporation

Solvate

Sonian, Inc.

Soocial

Soup.io

Speedeals

Speek

Sprout

SproutBox

Startup Guru

Startuply

Stealth

Stealth Live Video Startup

Stealth-mode start-up

Storenvy

Symplified

Syncplicity

SynthaSite

TalentSpring, Inc.

Tarams Software Technologies Pvt Ltd

TeamHomeField.com

TechStars Boston 2010 Company

Temperature@lert

TempMine

textaurant, Inc.

Textingly

The Noo Group Ltd

The Village

Therify Corporation

Tippr

Tivix Inc.

ToITL

Top Right, Inc.

Trading Games, Inc.

Treilla

Triana Venture Partners

TuneyFish Inc.

Tutor Trove, LLC

Twig

Twilio Inc.

Twiva

Unblab

Unstructured Q

UserMojo

UserVoice

UxStation Recruiting

ValueAppeal

Veer West LLC

Venture Incubator S.A.

VetAnyware

VideoBloom, Inc.

VIPER

Virtuosant Technology

VirtuOz

Virvo Web Development

VisionLink

VisualCV, Inc.

Vivoneco srl

VolunteerBIG

WebGreek Inc.

WebMySystems Ltd

Wetpaint

Wipus

Wise Eyes inc.

wiseri

WordStream Internet Marketing Inc.

Work Market

Workday

Workday

Workstreamer

Xackup

XCruiser/Stealth StartUp

YOUBICWITUS

youngStartup Ventures

Your Mapper

ySage Technologies

Zendesk

ZepInvest

Zimple, Inc.

Zonline Sports Inc.

Zoo Workshop, LLC

Hmm... are we missing a start-up? Let us know.