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YC Summer 2011 (S11)

60 companies Y Combinator lists for Summer 2011, with what each one builds. 6% of the tagged companies are AI, up from 2.6% in W11.

Companies
60
AI share
6%
Top sector
Infrastructure
9 companies
Second
Marketing
6 companies

What’s in Summer 2011

Summer 2011 lists 60 companies so far (W11 had 45). The biggest themes by YC's tags are Developer Tools (6), Education (4), Marketplace (4), Video (4) and Advertising (3). The largest sectors are Infrastructure, Marketing, Home and Personal and Consumer Finance. 5% are based outside the US.

  • Developer Tools · 6
  • Education · 4
  • Marketplace · 4
  • Video · 4
  • Advertising · 3

See what YC asked founders to build · Breakout themes across batches

All Summer 2011 companies

60 companies

  • Codecademy

    The leading online learning platform for technical skills.

    Education225New York City, NY, USAAcquired
  • Segment

    Software and APIs to collect, clean, and control customer data.

    Analytics550San Francisco, CA, USAAcquired
  • AgileMD

    Predictive analytics and clinical pathways for hospitals

    AI
    Healthcare IT19San Francisco, CA, USA
  • Aisle50

    Grocery deals.

    Home and Personal11Chicago, IL, USAAcquired
  • Apollo

    Apollo helps engineering teams accelerate delivery

    Infrastructure200San Francisco, CA, USA
  • Automatic

    Automatic connects your car to the rest of your digital life.

    Consumer Electronics51San Francisco, CA, USAAcquired
  • Caviar

    Uber for food.

    Food and Beverage51San Francisco, CA, USAAcquired
  • Citus Data

    Real-time. Big data. PostgreSQL

    Infrastructure45San Francisco, CA, USAAcquired
  • Clerky

    Makes legal paperwork easy for startups and their attorneys.

    Legal35San Francisco, CA, USAAcquired
  • Clutch

    An easy to integrate library for native iOS applications designed to…

    Engineering, Product and Design2San Francisco, CA, USAAcquired
  • Compose

    We make it easy to run databases. PostgreSQL, Redis, MongoDB,…

    Infrastructure51San Francisco, CA, USAAcquired
  • Cryptoseal

    Server key management, VPN as a Service, Privacy VPN. Sold to…

    Infrastructure3San Francisco, CA, USAAcquired
  • Debteye

    Automate credit counseling.

    Consumer Finance2Chicago, IL, USAAcquired
  • Draft

    Making Draft. Super simple version control and collaboration for…

    Productivity1Chicago, IL, USAInactive
  • Dubjoy

    Dubjoy translates and voice-overs your video to any language

    Marketing2San Francisco, CA, USAInactive
  • Embark

    Public transit apps. Acquired by Apple in 2013.

    Transportation Services2San Francisco, CA, USAAcquired
  • Everyme

    The #1 private social network

    Social2San Francisco, CA, USAInactive
  • Firebase

    Build and grow iOS, Android, and Web apps.

    Infrastructure500San Francisco, CA, USAAcquired
  • Fobo

    Sell to people nearby.

    Home and Personal2San Francisco, CA, USAAcquired
  • Freshplum

    Analytics with action

    Analytics8San Francisco, CA, USAAcquired
  • Genius

    Music Intelligence

    Content101New York City, NY, USAAcquired
  • GlassMap

    Location sharing. Acquired by Groupon in 2013.

    Social11San Francisco, CA, USAAcquired
  • GoCardless

    We’re building the world’s bank payment network.

    Consumer Finance900London, England, United KingdomAcquired
  • HackerRank

    Change the world to value skills over pedigree

    Recruiting and Talent300San Francisco, CA, USA

Source: Y Combinator’s public company directory. Each company links to its YC profile. See how we count and what YC asked founders to build.

Frequently asked questions

How many companies are in YC Summer 2011?

Y Combinator's public directory lists 60 companies for Summer 2011 (S11), compared with 45 in Winter 2011. YC adds companies as they launch, so a recent batch can still grow.

What kind of startups are in YC Summer 2011?

The most common themes by YC's own tags are Developer Tools (6), Education (4), Marketplace (4), Video (4) and Advertising (3). The largest sectors are Infrastructure, Marketing, Home and Personal and Consumer Finance. 6% of the companies YC has tagged are AI.

Where are YC Summer 2011 companies based?

5% of Summer 2011 companies with a listed location are based outside the US.