Company directory
Y Combinator Summer 2011 batch: all 60 companies.
YC's public directory lists 60 companies in the Y Combinator Summer 2011 batch: 14 active, 26 acquired, 20 inactive and 0 public, by YC's own labels. The most common industries are B2B (30), Consumer (18) and Fintech (4).
Companies in the YC Summer 2011 batch
60 companies in this view
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- Industry
- Healthcare · Healthcare IT
- Location, as listed
- San Francisco, CA, USA; RemoteTeam size 19
- Status, as YC lists it
- Active
- Industry
- Consumer · Home and Personal
- Location, as listed
- Chicago, IL, USATeam size 11
- Status, as YC lists it
- Acquired
- Industry
- B2B · Infrastructure
- Location, as listed
- San Francisco, CA, USA; RemoteTeam size 200
- Status, as YC lists it
- Active
- Industry
- Consumer · Consumer Electronics
- Location, as listed
- San Francisco, CA, USATeam size 51
- Status, as YC lists it
- Acquired
- Industry
- Consumer · Food and Beverage
- Location, as listed
- San Francisco, CA, USATeam size 51
- Status, as YC lists it
- Acquired
- Industry
- B2B · Infrastructure
- Location, as listed
- San Francisco, CA, USA; Istanbul, Istanbul, Turkey; Amsterdam, NH, NetherlandsTeam size 45
- Status, as YC lists it
- Acquired
- Industry
- B2B · Legal
- Location, as listed
- San Francisco, CA, USA; RemoteTeam size 35
- Status, as YC lists it
- Active
- Industry
- B2B · Engineering, Product and Design
- Location, as listed
- San Francisco, CA, USATeam size 2
- Status, as YC lists it
- Acquired
- Industry
- Education
- Location, as listed
- New York City, NY, USA; New York, NY, USATeam size 225
- Status, as YC lists it
- AcquiredYC top company
- Industry
- B2B · Infrastructure
- Location, as listed
- San Francisco, CA, USA; San Mateo, CA, USATeam size 51
- Status, as YC lists it
- Acquired
- Industry
- B2B · Infrastructure
- Location, as listed
- San Francisco, CA, USA; Mountain View, CA, USATeam size 3
- Status, as YC lists it
- Acquired
- Industry
- Fintech · Consumer Finance
- Location, as listed
- Chicago, IL, USATeam size 2
- Status, as YC lists it
- Acquired
- Industry
- B2B · Productivity
- Location, as listed
- Chicago, IL, USA; RemoteTeam size 1
- Status, as YC lists it
- Inactive
- Industry
- B2B · Marketing
- Location, as listed
- San Francisco, CA, USATeam size 2
- Status, as YC lists it
- Inactive
- Industry
- Consumer · Transportation Services
- Location, as listed
- San Francisco, CA, USATeam size 2
- Status, as YC lists it
- Acquired
- Industry
- Consumer · Social
- Location, as listed
- San Francisco, CA, USA; Mountain View, CA, USATeam size 2
- Status, as YC lists it
- Inactive
- Industry
- B2B · Infrastructure
- Location, as listed
- San Francisco, CA, USA; Mountain View, CA, USATeam size 500
- Status, as YC lists it
- Acquired
- Industry
- Consumer · Home and Personal
- Location, as listed
- San Francisco, CA, USATeam size 2
- Status, as YC lists it
- Acquired
- Industry
- B2B · Analytics
- Location, as listed
- San Francisco, CA, USATeam size 8
- Status, as YC lists it
- Acquired
- Industry
- Consumer · Content
- Location, as listed
- New York City, NY, USA; Brooklyn, NY, USATeam size 101
- Status, as YC lists it
- Acquired
- Industry
- Consumer · Social
- Location, as listed
- San Francisco, CA, USATeam size 11
- Status, as YC lists it
- Acquired
- Industry
- Fintech · Consumer Finance
- Location, as listed
- London, England, United KingdomTeam size 900
- Status, as YC lists it
- Active
- Industry
- B2B · Recruiting and Talent
- Location, as listed
- San Francisco, CA, USATeam size 300
- Status, as YC lists it
- Active
- Industry
- Consumer · Social
- Location, as listed
- San Francisco, CA, USATeam size 2
- Status, as YC lists it
- Inactive
- Industry
- B2B · Infrastructure
- Location, as listed
- San Francisco, CA, USATeam size 34
- Status, as YC lists it
- Active
- Industry
- B2B · Productivity
- Location, as listed
- San Francisco, CA, USATeam size 2
- Status, as YC lists it
- Inactive
- Industry
- Consumer · Home and Personal
- Location, as listed
- San Francisco, CA, USA; Mountain View, CA, USATeam size 11
- Status, as YC lists it
- Inactive
- Industry
- Consumer · Gaming
- Location, as listed
- San Francisco, CA, USATeam size 2
- Status, as YC lists it
- Acquired
- Industry
- B2B · Sales
- Location, as listed
- San Francisco, CA, USA; Berkeley, CA, USATeam size 50
- Status, as YC lists it
- Active
- Industry
- Fintech · Consumer Finance
- Location, as listed
- San Francisco, CA, USATeam size 2
- Status, as YC lists it
- Inactive
- Industry
- Fintech · Consumer Finance
- Location, as listed
- New York City, NY, USA; San Francisco, CA, USATeam size 2
- Status, as YC lists it
- Inactive
- Industry
- B2B
- Location, as listed
- Toronto, ON, Canada; RemoteTeam size 31
- Status, as YC lists it
- Active
- Industry
- B2B · Marketing
- Location, as listed
- San Francisco, CA, USATeam size 150
- Status, as YC lists it
- Active
- Industry
- Consumer · Home and Personal
- Location, as listed
- New York City, NY, USA; San Francisco, CA, USATeam size 11
- Status, as YC lists it
- Inactive
- Industry
- B2B · Analytics
- Location, as listed
- San Francisco, CA, USATeam size 11
- Status, as YC lists it
- Acquired
- Industry
- B2B · Engineering, Product and Design
- Location, as listed
- San Francisco, CA, USA; Menlo Park, CA, USATeam size 11
- Status, as YC lists it
- Acquired
- Industry
- Consumer · Food and Beverage
- Location, as listed
- Los Angeles, CA, USATeam size 11
- Status, as YC lists it
- Inactive
- Industry
- B2B · Marketing
- Location, as listed
- San Francisco, CA, USATeam size 11
- Status, as YC lists it
- Acquired
- Industry
- B2B · Infrastructure
- Location, as listed
- San Francisco, CA, USATeam size 4
- Status, as YC lists it
- Inactive
- Industry
- Consumer · Home and Personal
- Location, as listed
- San Francisco, CA, USATeam size 2
- Status, as YC lists it
- Inactive
- Industry
- B2B · Infrastructure
- Location, as listed
- San Francisco, CA, USA; Palo Alto, CA, USA
- Status, as YC lists it
- Inactive
- Industry
- Education
- Location, as listed
- New York City, NY, USA; San Francisco, CA, USATeam size 12
- Status, as YC lists it
- Inactive
- Industry
- Healthcare · Healthcare IT
- Location, as listed
- San Francisco, CA, USA; Hayward, CA, USATeam size 100
- Status, as YC lists it
- Active
- Industry
- B2B · Infrastructure
- Location, as listed
- San Francisco, CA, USA; Copenhagen, DenmarkTeam size 51
- Status, as YC lists it
- Acquired
- Industry
- Real Estate and Construction · Housing and Real Estate
- Location, as listed
- San Francisco, CA, USATeam size 11
- Status, as YC lists it
- Inactive
- Industry
- Consumer · Transportation Services
- Location, as listed
- San Francisco, CA, USATeam size 11
- Status, as YC lists it
- Inactive
- Industry
- Healthcare · Healthcare Services
- Location, as listed
- San Francisco, CA, USA; Palo Alto, CA, USA; RemoteTeam size 50
- Status, as YC lists it
- Acquired
- Industry
- B2B · Analytics
- Location, as listed
- San Francisco, CA, USATeam size 550
- Status, as YC lists it
- AcquiredYC top company
- Industry
- B2B · Security
- Location, as listed
- San Francisco, CA, USA
- Status, as YC lists it
- Active
- Industry
- Consumer · Content
- Location, as listed
- Boulder, CO, USATeam size 11
- Status, as YC lists it
- Inactive
- Industry
- B2B · Sales
- Location, as listed
- San Francisco, CA, USA; RemoteTeam size 35
- Status, as YC lists it
- Active
- Industry
- B2B · Productivity
- Location, as listed
- San Francisco, CA, USATeam size 2
- Status, as YC lists it
- Acquired
- Industry
- B2B · Marketing
- Location, as listed
- San Francisco, CA, USATeam size 2
- Status, as YC lists it
- Acquired
- Industry
- Consumer · Social
- Location, as listed
- New York City, NY, USA; Brooklyn, NY, USATeam size 2
- Status, as YC lists it
- Inactive
- Industry
- Education
- Location, as listed
- San Francisco, CA, USATeam size 2
- Status, as YC lists it
- Acquired
- Industry
- B2B · Marketing
- Location, as listed
- San Francisco, CA, USATeam size 11
- Status, as YC lists it
- Active
- Industry
- B2B · Marketing
- Location, as listed
- Kitchener, ON, CanadaTeam size 201
- Status, as YC lists it
- Active
- Industry
- B2B · Productivity
- Location, as listed
- San Francisco, CA, USATeam size 2
- Status, as YC lists it
- Inactive
- Industry
- Real Estate and Construction · Housing and Real Estate
- Location, as listed
- San Francisco, CA, USATeam size 200
- Status, as YC lists it
- Acquired
- Industry
- Consumer · Gaming
- Location, as listed
- San Francisco, CA, USATeam size 2
- Status, as YC lists it
- Inactive
How to use this list
- Filter by industry, listed location or status, or search for a company, a city or one of YC's tags.
- Each name opens the company's YC profile. The website link goes to the company's own site; we show it only for companies YC lists as active or public, because the domains of closed and acquired companies often lapse or change hands.
- Status is YC's label, not our assessment. Active does not mean funded, growing or looking for suppliers.
- Keep a list as you go. Add to my research saves a company in this browser, and Download my list turns your picks into a spreadsheet.
About the Summer 2011 batch
The directory lists 60 Summer 2011 companies, most often first listed in San Francisco (46), New York City (6) and Chicago (3). YC flags 2 of them as top companies.
About this data
Each record comes from YC's public startup directory, through the open-source yc-oss mirror of it, pulled on September 13, 2026. We show YC's own industry, location and status labels and none of YC's company descriptions. The directory lists launched companies YC shows publicly, so a company that has left it will not appear here.
If a record is wrong, use Suggest a correction on its row and include a source. We check corrections against YC's directory and the company's own site.
Sources
Checked September 13, 2026. YC updates its directory, so counts and labels change. Mining Wells is not affiliated with Y Combinator.
- Y Combinator: Startup directory, Summer 2011 batch: the companies, their status, industry and listed locations
- yc-oss: open-source mirror of YC's directory (pulled September 13, 2026): the snapshot these records come from
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