66 YC Companies in the W12 Batch (Winter 2012)

Y Combinator's Winter 2012 batch (W12) has 66 companies in this directory. Below is every one of them: what it does, where it is based, its status today, and a link to its YC application reconstructed in the real form, so you can read how W12 founders described their companies before they got in.

Companies
66
Top industries
B2B, Consumer and Fintech
Top locations
San Francisco, New York and Palo Alto
YC top companies
6
66 reconstructed applications

Read the YC application of all 66 companies

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The first 66 companies, top companies first

1
Amplitude
AmplitudeTopDigital Analytics Platform
Winter 2012San Francisco, CAPublic
4
PlanGrid
PlanGridTopMobile applications for the construction industry.
Winter 2012San Francisco, CAAcquired
5
Sendwave
SendwaveTopInstant, no fee international remittances.
Winter 2012Boston, MAAcquired
6
Wave
WaveTopMobile money app for Africa
Winter 2012Dakar, Dakar Region, SenegalActive
7
42Floors
42FloorsWe make it easy to search for office space.
Winter 2012San Francisco, CAAcquired
10
Ark
ArkArk organizes the world's social information.
Winter 2012San Francisco, CAInactive

That is 10 of 66.

Every company below has its YC application reconstructed in YC Insights. Create a free account to read them all.

Read all 66 applications
11
Authy
AuthyAuthy is a Two-Factor Authentication platform for developers
Winter 2012San Francisco, CAAcquired
12
BarSense
BarSenseKid's first smartphone with web-based parental controls.
Winter 2012Mountain View, CAInactive
15
Carsabi
CarsabiCarsabi is the search engine for used cars
Winter 2012Mountain View, CAInactive
16
Chute
ChuteDiscover the photos and videos people are taking of your brand or…
Winter 2012San Francisco, CAAcquired
17
CircuitHub
CircuitHubOn-Demand Electronics Manufacturing
Winter 2012London, England, United KingdomActive
19
CoderWall
CoderWall
Winter 2012San Francisco, CAAcquired
21
Documents.Me
Documents.MeClient-side encryption for your devices and the cloud.
Winter 2012Santa Clara, CAInactive
22
Exec
ExecExec is a house cleaning service that users can book from their…
Winter 2012San Francisco, CAAcquired
23FamilyLeafHelp families stay in touchWinter 2012San Francisco, CAAcquired
26
Fond
FondRewards and recognition SaaS for HR leaders
Winter 2012San Francisco, CAAcquired
27
GiveSpark
GiveSparkGivespark was a celebrity charity fundraising platform
Winter 2012Palo Alto, CAInactive
28
Glider
GliderWe filter distracting emails away from your inbox.
Winter 2012Portland, ORInactive
30
HackPad
HackPadA realtime wiki for getting things done.
Winter 2012San Francisco, CAAcquired
34
Jellyfish Art
Jellyfish Art
Winter 2012San Francisco, CAInactive
36
Loom
LoomCloud storage for photos and videos (acquired by Dropbox).
Winter 2012San Francisco, CAAcquired
37
LVL6
LVL6We make mobile MMOs.
Winter 2012Palo Alto, CAInactive
42
Midnox
Midnox
Winter 2012Palo Alto, CAAcquired
43
Minefold
MinefoldSimple multiplayer game servers.
Winter 2012San Francisco, CAInactive
44
MyVR
MyVRThe open platform for the vacation rental industry.
Winter 2012San Francisco, CAAcquired
45
Optilly/Installmonetizer
Optilly/InstallmonetizerFb ad optimization platform
Winter 2012San Jose, CAInactive
46
Per Vices
Per VicesBuilding Mission Critical Software Defined Radio products.
Winter 2012Toronto, ON, CanadaActive
48
Priceonomics
PriceonomicsWe help companies turn their data into great stories.
Winter 2012San Francisco, CAAcquired
49
Rescale
RescaleHigh Performance Computing Built for the Cloud
Winter 2012San Francisco, CAActive
50
Ridecell
RidecellWorld's Leading Fleet Intelligence Platform
Winter 2012San Francisco, CAActive
52
SendHub
SendHubSimple Business SMS. SMBs to Large Enterprise.
Winter 2012Pleasanton, CAAcquired
54
Shopular
ShopularDeals, Coupons & Cash Back for your favorite stores.
Winter 2012Redwood City, CAAcquired
55
SlidePay
SlidePayBanking and Payment Platform APIs. Exited October 2014.
Winter 2012Mountain View, CAAcquired
56
Socialcam
SocialcamThe easiest way to share videos with friends and family.
Winter 2012San Francisco, CAAcquired
58
Swiftype
SwiftypeSmart search for the modern team.
Winter 2012San Francisco, CAAcquired
60
Tap to Learn
Tap to LearnGames For Education
Winter 2012Menlo Park, CAInactive
63
WireOver
WireOverReally secure file sending for big files.
Winter 2012Cambridge, MAInactive
65
Zillabyte
ZillabytePalantir for sales people
Winter 2012San Francisco, CAInactive
66
Zipio
ZipioDeal search service
Winter 2012Inactive

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About this list

This list is part of Round Funded, an investor database and outreach platform for founders. It covers 60,000+ active VCs, angels, family offices and accelerators with verified contacts, lets you send pitches from your own Gmail, and includes a free Data Room for your raise.

Frequently Asked Questions

How many Y Combinator companies are in the Winter 2012 batch?

This directory lists 66 YC companies in the Winter 2012 batch, out of 6,207 across every batch since 2005. The count updates when the directory is refreshed, and every one of them is on this page with a link to its public profile.

Are the YC applications on these pages real?

No. YC keeps submitted applications private. Every application linked from this list is a reconstruction: the real YC form questions, answered from the company's public data. The Company section is free on each page; the rest opens in YC Insights.

Which companies on this page are best known?

Amplitude, Gusto and Matterport lead the table above. YC marks 6 of the 66 companies here as top companies, its own list of the highest-valued and highest-revenue alumni.

How do I use this list when applying to YC?

Pick five companies on this page whose product is closest to yours, read their reconstructed applications side by side in YC Insights, and note how each answers the same question. Then write your own answers to that standard.

Where does this data come from?

From YC's public company directory, refreshed by batch, with each company's status, industry and location as YC reports them. Round Funded adds the reconstructed application and the founder profiles; nothing private is published.

What is Round Funded?

Round Funded is an investor database and outreach platform for startup founders. It lists 60,000+ active investors with verified contacts, filtered to recent investment activity, and lets founders send personalized pitches from their own Gmail, track replies, and share a free Data Room. Round+ starts at $99 per month with a 3-day trial.