Try: investor:"y combinator"

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"CM" (Consumer Stealth)

10gen

23andMe

27 Sound Entertainment

2NgageU Inc.

360logica software testing services

7digital

9thDown

AbbyAve

Abnexo Information Technology

Abroad101

AC Lion

Achieve Internet

Acquia

AcroLite Interactive

Actsoup Networks

Adap.tv

Adchemy

AirBed & Breakfast

Alice.com

Aligned Products & Technologies

AlleyCorp

AltScale

Alvazan, Inc

Anthony Ettinger

Appcelerator

Applico

ApplyGo.com

appssavvy

Aprigo

Apsona

Apture

Arkayne

Arkotech Corporation

Artha42 Technology Solutions Pvt. Ltd

Askboth

ATechs

Audacious Inquiry, LLC

Aurus IT Solutions

Avecora

AWVScan

AxiomBG

B!CODE

B.T.I. Creations LLC and Productions

Babajob.com

BackType

bayt.com

BeenVerified

Behance

BestThinking

Betterment

BIG Folio

BiggerPockets, Inc.

Bitmain Studios Inc

Bivi

bizzydesk.com

Bleeding Arts, LLC

blip.tv

BlipBoard

Blist

Blue Green Ventures

Book Bros. Group, LLC

BookMesh

Boxi.com

Boxwish

Brand Yourself

Brewpot LLC

Bright Hub

Brilig

Briteclick, Inc.

BroadSpire Inc

Bulldog Solutions

Buqoo

Business Catalyst

Business Opputunity / Web 2.0

BusinessElite

buzzd

BuzzPal - The World Is Your Party

CafeMom

CakePC

CaptainU

Career Group

CareerCore, Inc.

CareerCore, Inc.

CareerMesh

CareerNumbers

Cellbi Software

Center'd

Central Desktop, Inc

Centric Media

ceoworld.biz

Chat Badge

Checkster

CHI.MP

Chomp, Inc.

CitizenGroove

CityCam

CityIT Solutions Pvt. Ltd.

Clearspring

Clickmash

ClicksMetro Online Pvt LTd

Coaches Fraternity

Cog Tree, LLC

Cold Brew Labs

CollaborativeHealth LLC

Colleaguester

CollegePeaks

Communispace

CommuniTeach

Compass Labs

ConcepSys Solutions LLC

Concepta Systems, LLC

Conduit

Conduit Labs

Confidential

Confidential

Confidential

Confidential

Confidential

Consolidated Independent

Consumer Stealth Mode Startup

Covestor

Cozi

Crawdout

Creatio

Crosspollinate

Crowd Science

CROWDPARK

Crushpad

Dabbleboard

DashMob

Dashwire, Inc.

DataFeedscripts.net

Datasisar

Dawdle

Daylife

Dead Meat

DECA

Defined Clarity

DeliverySupermarket.com

Design Management RUFFNEKK

Designing Studios

Destination Rewards

Deveel

deviantART

Diary.com

Digg

DISQUS

Distimo

Divvyshot, Inc

DocStoc

Domdex

DotNutz Solutions

Drupal Professionals

dusoto

Dynamical Software, Inc.

Earth.org

EasyAutoSales.com

eBuddy

ECM Circle, Inc

Ecolect, Inc

eemoh

Efectividads Social Ads

eGrove Systems Pvt Ltd

ekaabo GmbH

ekoVenture

Eleven Learning

Emerging Internet Start Up

Enformed

Engago Technologies Ltd.

Engine Yard Inc.

English Platform

Enjyn

Ethico

Etsy

Eventbrite

EventVue

Evernote

EverS

Everywun

EvoApp

expenio

Experience Project

Exvo.com BV

EZClassSites.com

ezLearnezLearn

Facebook

Factor X Solutions Inc

Famigo

FanDome

Fanplicity

FanShout

Fantazzle Fantasy Sports Games

FashionStake

FastSpring

FeedTheBull

FightLaunch.com

FillAnyPdf .com

FinancialOS, Inc.

Fission Strategy

Fizzy Software

Fluther

Folloh

FoodieLink

For Sale Buy Green

Fora

FossaTec Business Systems

FossaTec Business Systems

Free Microsoft Points

FreeCause, Inc.

FreezeCrowd, Inc.

Freshman Fund

Fridge Door

FriendFeed

fring

Frog Industry

FUHU, Inc.

Fuzzyshot

GameLayers

GeckoGo

Generationwhy

Global artist agency

Gnip

Go Smart Solutions, LLC

GoBid, Inc.

Going

GoodCrush

GoTime

GrandOffice

Grasshopper

Grayson Labs

GreenMango

Grockit

Grooveshark.com

Groupspeak

gtrot

GuideSpark, Inc.

Habit Industries Inc.

Hampshire St Experiment

hayStocked

Hed 2 Hed Consulting

Heekya

HelpMyCash

Helptwits

Heyzap

hi5

HiveFire, Inc

Honk

Hook

Hotlist

HourVille

HowAboutWe.Com

HubSpot

HuddleHub

Huddler

Icarian Records

IdeaMama

iGOMobi

iiNTENSE Media

IKaru Projects

iliketotallyloveit

ILLUMINZ

ImageShack Corporation

iMakeMovie.com

iminlikewithyou

InfoSoft Global (P) Ltd.

Inkling Markets

Innoengineer

Input Ladder

Internacio

InternCircle.com

Internet Media

Internet Startup

InternetSparring.com

InTotality

Invisible Sun Media

Invitacia

Inzic Solutions (Pvt) Limited

iOffer

iResume

iSeeCars.com

isleptthroughclass.com

Issuu

itemCASETR.com

Jack The Donkey Inc

Jaman

Jamglue

JamLegend

Jelli

Jimdo GmbH

JNJ Mobile

JobGrades.com

Juice Analytics

Just Landed

Jutera Inc

Kaasu Info Ventures

kaboodle

kaChing Group Inc.

KarmaKorn

Kashless, Inc.

Kayak

Key Ingredient

KGB

kgb web

kikin Inc

KillYourCube.com

kioosk

Klickable Inc.

Knowband

Knowmore

KODA

KONARCHS LLC

Kongregate

Kontera

Kosmix

Kron-Service

Labortopia

LeapFILE

LearnHub

Lesson Nine GmbH (Babbel.com)

Licensing Planet, Inc.

Lift Media

Lightspeed Venture - Entrepreneur-In-Residence

Lijit Networks, Inc.

Link Logik Tech Technologies

LinkLarry

ListBite

ListenLogic, LLC

LiveFyre

LiveOut

Local Motors

LocaModa

LogicBoxes

LOLapps

LongTail Video

LoveCinema

LoyaltyMatch

LuvitLive

Macroaxis Inc

Manawa Networks

Maria Health

Mashable

Mashape

Mashery

Me!Box Media

Media Service Provider Ltd

MeeBee

Meemi.com

Meetcast

Meetlie

Meetup

Memeo

Memrise

Mendeley

Mergeskills

Metaweb

MGDevice

MindSmack.com

MindTouch

Mint

Mixbook

Mixpanel

Mixtt, Inc.

MobGold

Mobibolt, Inc.

MobiRumor

MochiMedia

Modea

MojoPages

Momentum Design Lab

Mona Lisa Style

Moolah

Move Ventures

Mr Tweet / Discoverio

Mumboe

MUNI-55

Music Mobile Global

MyBeanstalk, INC.

MyGameMug

myJambi

Naanu

Nan Gabriel Studio, LLC

NashaRussia

NationalBLS, the Buyer Listing Service

NavigatingCancer.com

NearbyThis, Inc.

NeighborPal

Netvibes, Inc.

Newcology

News Distribution Network Inc

NewsGator

nextstop.com

Neybor

NICHE technologies, Inc.

Nityo Infotech

Nocturnal Feast

NOLOH

NOM

Ntroduction

oDesk

One Block Off the Grid

Onirico Sistemas

Online Promotions Group

Openfilm, LLC

Openomy

Operative

Opinmind, Inc

OPT

OptioLogic Technologies Pvt Ltd

OS3

Outbrain

Outside.in

Panoverse

Paper Culture

Paradigm Analytics

Pareto Networks

Parichute

PawLinks, LLC

Peerz

People Capital

perceptu

Pet Holdings, Inc.

Phosphate

PhotoZen

Physicians Rx Network

PigLit

Pigmata Media Inc.

Pipio

Pique

Playfire.com

Playfirst

PlayHaven

Playlist

PlumWillow

Plurk

Policypitch, LLC

Poll Everywhere

Polyvore

Posh Society

PositiveZero

Posterous, Inc

Postling

PostRank

PowerHouse dynamics

Predictify

Primed Ventures

ProductWiki Inc.

Project Athena

Proonfile

Provayo

psd2cssonline.com

Pulse of the People, LLC

Punchbowl Software

Q Digital Studio

Qgia LC

Quirky

Quotav8.com

Ramamia

RapidFeeds.com

Rapleaf

Ratingworld.com

Real Girls Media

Realty Robot

Recipe Puppy

Red Beacon

Redfin

RentJuice

Repfolio

Repower@Home (Alliance for Climate Protection)

RescueTime, Inc

Resorcetek Systems Pvt Ltd

RetireHub.com

Revenue Architects

Revolution Technology, Inc.

Rhino Cloud Computing Corp.

Riot Games, Inc.

RiotDesign

RiseSmart Inc

RMG

Roblox

RobustLinks

RockinSEO

RockYou, Inc.

RooftopComedy

Roomorama

RossQA

Rubicon Project

Rype

S&S Ventures - The Sami Group

SachMani

SaleCamel.com

Santilga

SapnaSolutions

SayHired

SB Nation

Schoology

SchoolRack

ScienceStage.com - The universal online portal for

Sciosys

Scrapblog

Scribd

Scribnia

SEARCH LABS, LTD

SeatGeek

See logo

Seesmic

Sendside Networks

Shape Up The Nation

Shape Up The Nation

Shareaholic Inc

Sharefam.com

ShareThis

Sharethrough

Shhh....

Shiva Media

ShoeDazzle.com Inc

Shop It To Me

Shopfront.com

Shoptastic

ShowClix, Inc.

Showzey

Shutl

SignalFive

Simple Web Works

Simply Hired

sivvle

SkillSlate

SkillSurge Learning Resources

Skydeck

Skyfire

Skyhook Wireless

Sleep.FM

SlideShare

Smarkets

Smartdate

Smartoons

Snaptalent

Social Concepts

social-media

SocialDynamics

SocialMedia

Socialroster

SOCIALtality

Socialthing!

Soft Gravity Inc.

Soft Illuminations, Inc.

Sokanu

Songkick

Spacekarma

Sparkart

Speak 2B Free

SpinStitch

Splicefeed

sportlog

Spreaker

Sproost, Inc.

Sprout

SproutBox

Sprowtt

Staff One Inc

Startup Guru

StartupAgents

Startuply

StartUpNetwork.com, Inc.

Stateless Creations

Stealth

Stealth

Stealth

Stealth Live Video Startup

Stealth SF Startup

Stealth Techstar Company

Stealth Video Startup

Stealth-mode start-up

Stimuli Lab

Stream Fame

StudentsMove

stuffiminto.com, Incorporated

StumbleUpon

SugarSync, Inc.

Summer Workation

Supercool School

SurveyMonkey

Swingly

Swipht

Synacor

syncables

SynthaSite

Tag Me In

Tagged

Tapulous

TargetSpot, Inc.

TBD

Team Of Leaders

TechCrunch

TechSmart Solutions Group

TechStars Boston 2010 Company

Tekriti Software

Temperature@lert

Tenant Txt

The Branding Spot

The Gaming Krib

The Growth Group

the JAR Group

The Sage Guide

The Touronomist

The Village

TheCaringSpace.com

TheHumanCreativityProject

Therify Corporation

Think Studios

Thomas-co Media

Thrive

thumbble

Ticket Text

TicketLeap

Tickle Industries

TickrTalk

Tingz, Inc.

tipjoy

to be discussed

Togetherville

TokBox

Tomnica, Inc.

Top 20 Realty

Treilla

Tripbase.com

TripIt

True Knowledge

Trulia

Trusty's

Tsavo Group

TubeMogul

Tumblr

TuneyFish Inc.

Twilio Inc.

Twitter

Twiva

Uloop

Uniglam

Unigo, LLC

UpToUs

Urban Apt Group

Usa Jobs

uShow

Ustream.tv

ValueAppeal

Veer West LLC

Velvet View

VendorRate

Venture Incubator S.A.

Veoh

Veritat Advisors

Vibio Inc

Video Suspects, Inc.

Viewzi

Viridus, Inc.

Virtual Organization Management Institute

Virvo Web Development

Visible.net, Inc.

Visual X

VisualCV, Inc.

Vivoneco srl

Viximo

VolunteerBIG

Wander Mobile LLC

Web development

WebMySystems Ltd

Webnode

Webs

Weebly

WeGoWeGo Inc

WeLike, LLC

Wellnet

Western Leap, LLC

Wetpaint

Wheeldown, Inc.

Whole Travel

Whooligan

WidgetBox

Wiggio

Wikia

Wikifeeds

Wikinvest

Wildscreen.TV ::new generation quality broadcast::

winzz

Wipus

wis.dm

wiseri

Wize, Inc.

Woosha

Workday

workingName

Workstreamer

Workyourcareer.com

WV Labs

Xoopit

Yardbarker

Yola Inc.

Yoono

You Plus

YOUBICWITUS

youngStartup Ventures

YourTourBook.com

ySage Technologies

Zaang Inc

Zazzle

Zecco

Zenbe

Zero13 Group

Zilok.com/ Zi Group SA

Zimride, Inc.

Zinch

Zindagi

Zivity

Zoosk

zsaqa

zumeo

Zuno

Zunzoo

Zyglobe

Zynga

Zynx Health, Inc.

Zyoin

[212]MEDIA, LLC

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