83 YC Companies in the S12 Batch (Summer 2012)

Y Combinator's Summer 2012 batch (S12) has 83 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 S12 founders described their companies before they got in.

Companies
83
Top industries
B2B, Consumer and Education
Top locations
San Francisco, Mountain View and New York
YC top companies
7
83 reconstructed applications

Read the YC application of all 83 companies

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The first 83 companies, top companies first

2
Clever
CleverTopThe platform that powers technology in the classroom.
Summer 2012San Francisco, CAAcquired
3
Coinbase
CoinbaseTopBuy, sell, and manage cryptocurrencies.
Summer 2012Los Angeles, CAPublic
4
Instacart
InstacartTopMarketplace for grocery delivery and pickup
Summer 2012San Francisco, CAPublic
5
Lever
LeverTopTalent Acquisition Suite that combines ATS + Talent CRM
Summer 2012San Francisco, CAAcquired
7
Zapier
ZapierTopThe easiest way to automate your work.
Summer 2012Mountain View, CAActive
8
9gag
9gagMake the world happier.
Summer 2012Hong Kong, Hong KongActive
9
Airshared
AirsharedTBD
Summer 2012Inactive
10
Arc
Arcaerial videography
Summer 2012Palo Alto, CAInactive

That is 10 of 83.

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

Read all 83 applications
13
Boosted
BoostedSimple, fun, and fast electric vehicles.
Summer 2012Mountain View, CAAcquired
14
BrainTripping
BrainTripping
Summer 2012Inactive
15
BufferBox
BufferBoxThe future of package delivery. We are building a network of…
Summer 2012Waterloo, ON, CanadaAcquired
17
Celery
CeleryCelery is a platform for pre-orders ( Accept…
Summer 2012San Francisco, CAInactive
18
ClassDojo
ClassDojoCommunication app for K-8 teachers, kids, and families
Summer 2012San Francisco, CAActive
20
Collections
CollectionsFinder for the Cloud
Summer 2012Mountain View, CAInactive
22
Crohnology (by Healthy Labs)
Crohnology (by Healthy Labs)We turn Patients into Researchers.
Summer 2012San Francisco, CAInactive
23
DataNitro
DataNitroWe speed up Excel.
Summer 2012New York, NYInactive
24
Double Robotics
Double RoboticsTelepresence robots
Summer 2012Burlingame, CAActive
25
Dreamforge
DreamforgeSimple 3d modeling software for 3d printers.
Summer 2012San Francisco, CAInactive
27
Eligible
EligibleInsurance Billing APIs for Healthcare Businesses
Summer 2012Brooklyn, NYActive
31
Framebase
FramebaseAPI for video.
Summer 2012San Francisco, CAInactive
33
FundersClub
FundersClubOnline VC
Summer 2012San Francisco, CAActive
35
GoScale
GoScaleDynamical Scaling Virtual Machines as a Service
Summer 2012London, England, United KingdomInactive
36
Grid
Grid
Summer 2012Mountain View, CAInactive
37
HealthSherpa
HealthSherpaPrivate sector Healthcare.gov.
Summer 2012Sacramento, CAActive
40
Human Dx
Human DxThe Human Diagnosis Project.
Summer 2012San Francisco, CAActive
41
Imgfave
ImgfaveA fun image sharing community.
Summer 2012San Francisco, CAInactive
42
Kamcord
Kamcord
Summer 2012San Francisco, CAAcquired
44
Kippt
KipptKippt is a social bookmarking service
Summer 2012San Francisco, CAInactive
45KnowmiaPandora meets Yelp for K-12 educational videos. We match each…Summer 2012San Francisco, CAAcquired
46
LeanMarket
LeanMarketMobile advertising
Summer 2012Mountain View, CAInactive
48
Markupwand
MarkupwandConvert Design files to working websites automagically
Summer 2012Bengaluru, KA, IndiaInactive
50
Mattermost
MattermostSecure Collaboration for Technical Teams
Summer 2012Palo Alto, CAActive
53
Natero
NateroData-driven customer success platform for B2B SaaS.
Summer 2012Mountain View, CAAcquired
54
NewsBlur
NewsBlurNewsBlur is a personalized news reader
Summer 2012San Francisco, CAActive
55
OctaveWealth
OctaveWealthThe 401(k) that helps you grow
Summer 2012San Francisco, CAActive
56
OmniVirt
OmniVirtOmniVirt is the leading VR Advertising platform for brands and…
Summer 2012San Francisco, CAAcquired
59
Pixate
PixateMobile application prototyping. Now part of Google.
Summer 2012Palo Alto, CAAcquired
63
ReelSurfer
ReelSurferClip and share any video from any website.
Summer 2012Menlo Park, CAInactive
64
RegistryLove
RegistryLoveCross-store wedding registry.
Summer 2012Cupertino, CAInactive
68
Streem
StreemAcquired by Box in June 2014. We built: (1) a native win/mac…
Summer 2012San Francisco, CAAcquired
69
Study Edge
Study EdgeAcquired by Carlyle. Edtech and other technology
Summer 2012Gainesville, FLAcquired
71
Svbtle
SvbtleA publishing platform.
Summer 2012San Francisco, CAActive
72
Tastemaker
TastemakerInterior design marketplace and online retailer
Summer 2012San Francisco, CAInactive
73
Testmunk
TestmunkAutomating mobile app testing.
Summer 2012CAInactive
74
Thread
ThreadThread makes it incredibly easy to dress well, using stylists and AI
Summer 2012England, United KingdomInactive
76
Upwave
UpwaveMarketing analytics for the world's biggest brand marketers
Summer 2012San Francisco, CAActive
81
VoiceGem
VoiceGemVoice messaging platform - Acquired by Palantir in 2013
Summer 2012San Francisco, CAAcquired
83
ZeroMailer
ZeroMailerEasy mailing lists
Summer 2012Acquired

Applying to YC? Study these applications first.

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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 Summer 2012 batch?

This directory lists 83 YC companies in the Summer 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?

Benchling, Clever and Coinbase lead the table above. YC marks 7 of the 83 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.