Company directory
Y Combinator Winter 2015 batch: all 110 companies.
YC's public directory lists 110 companies in the Y Combinator Winter 2015 batch: 40 active, 34 acquired, 32 inactive and 4 public, by YC's own labels. The most common industries are B2B (44), Consumer (21) and Healthcare (20).
Companies in the YC Winter 2015 batch
110 companies in this view
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- Industry
- Healthcare · Industrial Bio
- Location, as listed
- San Francisco, CA, USATeam size 2
- Status, as YC lists it
- Inactive
- Industry
- Consumer · Social
- Location, as listed
- Ljubljana, Ljubljana, SloveniaTeam size 2
- Status, as YC lists it
- Inactive
- Industry
- Healthcare · Healthcare IT
- Location, as listed
- Los Angeles, CA, USATeam size 1,000
- Status, as YC lists it
- Active
- Industry
- B2B · Marketing
- Location, as listed
- San Francisco, CA, USA; San Mateo, CA, USATeam size 2
- Status, as YC lists it
- Inactive
- Industry
- Industrials · Aviation and Space
- Location, as listed
- San Francisco, CA, USA; San Mateo, CA, USATeam size 2
- Status, as YC lists it
- Inactive
- Industry
- Fintech · Banking and Exchange
- Location, as listed
- Troy, MI, USA; RemoteTeam size 60
- Status, as YC lists it
- Active
- Industry
- B2B · Retail
- Location, as listed
- San Francisco, CA, USATeam size 2
- Status, as YC lists it
- Acquired
- Industry
- Consumer · Consumer Electronics
- Location, as listed
- New York City, NY, USA; New York, NY, USATeam size 51
- Status, as YC lists it
- Acquired
- Industry
- B2B · Finance and Accounting
- Location, as listed
- ON, CanadaTeam size 95
- Status, as YC lists it
- Acquired
- Industry
- B2B · Marketing
- Location, as listed
- Seattle, WA, USA; RemoteTeam size 51
- Status, as YC lists it
- Inactive
- Industry
- Industrials · Energy
- Location, as listed
- New York City, NY, USA; Mexico City, CDMX, Mexico; RemoteTeam size 100
- Status, as YC lists it
- Active
- Industry
- Real Estate and Construction · Housing and Real Estate
- Location, as listed
- Niagara Falls, NY, USA; RemoteTeam size 1
- Status, as YC lists it
- Active
- Industry
- Consumer · Transportation Services
- Location, as listed
- San Francisco, CA, USATeam size 501
- Status, as YC lists it
- Acquired
- Industry
- Consumer · Home and Personal
- Location, as listed
- New York City, NY, USATeam size 40
- Status, as YC lists it
- Active
- Industry
- Real Estate and Construction · Housing and Real Estate
- Location, as listed
- Ann Arbor, MI, USATeam size 2
- Status, as YC lists it
- Inactive
- Industry
- B2B · Security
- Location, as listed
- San Francisco, CA, USA; Santa Clara, CA, USATeam size 2
- Status, as YC lists it
- Acquired
- Industry
- B2B · Marketing
- Location, as listed
- Toronto, ON, Canada; RemoteTeam size 3
- Status, as YC lists it
- Inactive
- Industry
- B2B · Retail
- Location, as listed
- San Francisco, CA, USATeam size 6
- Status, as YC lists it
- Inactive
- Industry
- Unspecified
- Location, as listed
- Madrid, Community of Madrid, Spain; RemoteTeam size 2
- Status, as YC lists it
- Active
- Industry
- Government
- Location, as listed
- Buenos Aires, CABA, ArgentinaTeam size 1
- Status, as YC lists it
- Active
- Industry
- Fintech · Banking and Exchange
- Location, as listed
- New York City, NY, USA; New York, NY, USATeam size 11
- Status, as YC lists it
- Inactive
- Industry
- B2B · Marketing
- Location, as listed
- San Francisco, CA, USA; Mountain View, CA, USATeam size 10
- Status, as YC lists it
- Active
- Industry
- Real Estate and Construction · Construction
- Location, as listed
- Columbia, MO, USATeam size 5,400
- Status, as YC lists it
- PublicYC top company
- Industry
- Fintech · Payments
- Location, as listed
- San Francisco, CA, USA; Oakland, CA, USATeam size 11
- Status, as YC lists it
- Acquired
- Industry
- Consumer · Apparel and Cosmetics
- Location, as listed
- Los Angeles, CA, USA
- Status, as YC lists it
- Active
- Industry
- B2B · Engineering, Product and Design
- Location, as listed
- San Francisco, CA, USA; RemoteTeam size 2,000
- Status, as YC lists it
- PublicYC top company
- Industry
- B2B · Finance and Accounting
- Location, as listed
- New York City, NY, USA; New York, NY, USA
- Status, as YC lists it
- Active
- Industry
- Consumer · Home and Personal
- Location, as listed
- London, England, United Kingdom; RemoteTeam size 1
- Status, as YC lists it
- Active
- Industry
- Fintech · Consumer Finance
- Location, as listed
- San Francisco, CA, USA; Mountain View, CA, USATeam size 2
- Status, as YC lists it
- Inactive
- Industry
- Consumer · Social
- Location, as listed
- San Francisco, CA, USATeam size 2
- Status, as YC lists it
- Inactive
- Industry
- B2B · Supply Chain and Logistics
- Location, as listed
- San Francisco, CA, USATeam size 4,548
- Status, as YC lists it
- ActiveYC top company
- Industry
- B2B · Recruiting and Talent
- Location, as listed
- Toronto, ON, Canada; RemoteTeam size 45
- Status, as YC lists it
- Acquired
- Industry
- Healthcare · Industrial Bio
- Location, as listed
- San Francisco, CA, USA; Alameda, CA, USATeam size 12
- Status, as YC lists it
- Active
- Industry
- Fintech · Asset Management
- Location, as listed
- San Francisco, CA, USA; Mountain View, CA, USATeam size 2
- Status, as YC lists it
- Inactive
- Industry
- B2B · Finance and Accounting
- Location, as listed
- San Francisco, CA, USA; RemoteTeam size 2
- Status, as YC lists it
- Inactive
- Industry
- Consumer · Food and Beverage
- Location, as listed
- San Francisco, CA, USATeam size 11
- Status, as YC lists it
- Active
- Industry
- Consumer · Home and Personal
- Location, as listed
- New York City, NY, USA; Atlanta, GA, USA; South Lake Tahoe, CA, USATeam size 5
- Status, as YC lists it
- Active
- Industry
- Healthcare · Diagnostics
- Location, as listed
- Emeryville, CA, USATeam size 43
- Status, as YC lists it
- Public
- Industry
- Healthcare · Consumer Health and Wellness
- Location, as listed
- San Francisco, CA, USATeam size 5
- Status, as YC lists it
- Inactive
- Industry
- B2B · Supply Chain and Logistics
- Location, as listed
- Los Angeles, CA, USATeam size 67
- Status, as YC lists it
- Acquired
- Industry
- B2B
- Location, as listed
- Washington, DC, USA; San Francisco, CA, USA; RemoteTeam size 350
- Status, as YC lists it
- Active
- Industry
- B2B · Marketing
- Location, as listed
- New York City, NY, USA; New York, NY, USA; RemoteTeam size 19
- Status, as YC lists it
- Active
- Industry
- B2B · Retail
- Location, as listed
- San Francisco, CA, USATeam size 150
- Status, as YC lists it
- Active
- Industry
- B2B · Retail
- Location, as listed
- San Francisco, CA, USATeam size 14
- Status, as YC lists it
- Active
- Industry
- B2B · Infrastructure
- Location, as listed
- Miami, FL, USA; Mountain View, CA, USA; RemoteTeam size 172
- Status, as YC lists it
- Active
- Industry
- B2B · Retail
- Location, as listed
- Austin, TX, USA; San Francisco, CA, USA; RemoteTeam size 10
- Status, as YC lists it
- Acquired
- Industry
- B2B · Retail
- Location, as listed
- Boston, MA, USATeam size 32
- Status, as YC lists it
- Acquired
- Industry
- B2B · Infrastructure
- Location, as listed
- Not listedTeam size 2
- Status, as YC lists it
- Inactive
- Industry
- B2B · Finance and Accounting
- Location, as listed
- San Francisco, CA, USATeam size 17
- Status, as YC lists it
- Acquired
- Industry
- Healthcare · Consumer Health and Wellness
- Location, as listed
- San Francisco, CA, USA; Menlo Park, CA, USATeam size 130
- Status, as YC lists it
- Active
- Industry
- Consumer · Home and Personal
- Location, as listed
- San Francisco, CA, USATeam size 11
- Status, as YC lists it
- Inactive
- Industry
- Healthcare · Diagnostics
- Location, as listed
- San Francisco, CA, USA; Foster City, CA, USATeam size 40
- Status, as YC lists it
- PublicYC top company
- Industry
- Healthcare · Drug Discovery and Delivery
- Location, as listed
- San Francisco, CA, USATeam size 67
- 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
- Inactive
- Industry
- Real Estate and Construction · Housing and Real Estate
- Location, as listed
- Los Angeles, CA, USATeam size 48
- 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
- B2B · Infrastructure
- Location, as listed
- San Francisco, CA, USATeam size 60
- Status, as YC lists it
- Acquired
- Industry
- B2B · Supply Chain and Logistics
- Location, as listed
- San Francisco, CA, USATeam size 3
- Status, as YC lists it
- Inactive
- Industry
- B2B · Engineering, Product and Design
- Location, as listed
- New York City, NY, USATeam size 50
- Status, as YC lists it
- Acquired
- Industry
- Consumer · Social
- Location, as listed
- Las Vegas, NV, USATeam size 40
- Status, as YC lists it
- Inactive
- Industry
- B2B · Productivity
- Location, as listed
- San Francisco, CA, USATeam size 123
- Status, as YC lists it
- Active
- Industry
- B2B · Recruiting and Talent
- Location, as listed
- San Francisco, CA, USATeam size 8
- Status, as YC lists it
- Acquired
- Industry
- B2B · Marketing
- Location, as listed
- Chicago, IL, USATeam size 37
- Status, as YC lists it
- Acquired
- Industry
- Consumer · Home and Personal
- Location, as listed
- Boston, MA, USA; RemoteTeam size 3
- Status, as YC lists it
- Acquired
- Industry
- Consumer · Social
- Location, as listed
- San Francisco, CA, USA; RemoteTeam size 3
- Status, as YC lists it
- Inactive
- Industry
- Real Estate and Construction · Housing and Real Estate
- Location, as listed
- New York City, NY, USA; New York, NY, USATeam size 5
- Status, as YC lists it
- Active
- Industry
- Healthcare · Healthcare IT
- Location, as listed
- San Francisco, CA, USA; RemoteTeam size 230
- Status, as YC lists it
- Active
- 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
- Beijing, Beijing, ChinaTeam size 11
- Status, as YC lists it
- Acquired
- Industry
- Fintech · Payments
- Location, as listed
- Bengaluru, KA, IndiaTeam size 2,700
- Status, as YC lists it
- ActiveYC top company
- Industry
- B2B · Engineering, Product and Design
- Location, as listed
- New York City, NY, USA; New York, NY, USATeam size 52
- Status, as YC lists it
- Active
- Industry
- Government
- Location, as listed
- San Francisco, CA, USATeam size 65
- Status, as YC lists it
- Acquired
- Industry
- Consumer · Content
- Location, as listed
- San Francisco, CA, USATeam size 28
- Status, as YC lists it
- Active
- Industry
- Healthcare · Healthcare IT
- Location, as listed
- New York City, NY, USA; New York, NY, USA
- Status, as YC lists it
- Inactive
- Industry
- Government
- Location, as listed
- Nashville, TN, USA
- Status, as YC lists it
- Inactive
- Industry
- Real Estate and Construction · Construction
- Location, as listed
- New York City, NY, USA; RemoteTeam size 10
- Status, as YC lists it
- Active
- Industry
- B2B · Engineering, Product and Design
- Location, as listed
- Austin, TX, USATeam size 4
- Status, as YC lists it
- Active
- Industry
- Fintech · Banking and Exchange
- Location, as listed
- San Francisco, CA, USATeam size 11
- Status, as YC lists it
- Acquired
- Industry
- Healthcare · Drug Discovery and Delivery
- Location, as listed
- San Francisco, CA, USA; RemoteTeam size 28
- Status, as YC lists it
- Active
- Industry
- Healthcare · Medical Devices
- Location, as listed
- Seattle, WA, USATeam size 6
- Status, as YC lists it
- Acquired
- Industry
- B2B · Productivity
- Location, as listed
- San Francisco, CA, USATeam size 2
- Status, as YC lists it
- Inactive
- Industry
- B2B · Engineering, Product and Design
- Location, as listed
- San Francisco, CA, USATeam size 23
- Status, as YC lists it
- Acquired
- Industry
- Unspecified
- Location, as listed
- San Francisco, CA, USA; Palo Alto, CA, USATeam size 15
- Status, as YC lists it
- Active
- Industry
- B2B · Analytics
- Location, as listed
- San Francisco, CA, USA; RemoteTeam size 17
- Status, as YC lists it
- Acquired
- Industry
- B2B · Security
- Location, as listed
- San Francisco, CA, USATeam size 11
- Status, as YC lists it
- Acquired
- Industry
- Fintech · Consumer Finance
- Location, as listed
- San Francisco, CA, USATeam size 2
- Status, as YC lists it
- Inactive
- Industry
- Healthcare · Consumer Health and Wellness
- Location, as listed
- San Francisco, CA, USATeam size 52
- Status, as YC lists it
- Acquired
- Industry
- Consumer · Home and Personal
- Location, as listed
- San Francisco, CA, USA; Berkeley, CA, USATeam size 2
- Status, as YC lists it
- Inactive
- Industry
- Healthcare · Medical Devices
- Location, as listed
- San Francisco, CA, USATeam size 9
- Status, as YC lists it
- Inactive
- Industry
- Consumer · Travel, Leisure and Tourism
- Location, as listed
- London, England, United KingdomTeam size 9
- Status, as YC lists it
- Active
- Industry
- B2B · Productivity
- Location, as listed
- San Francisco, CA, USA; San Jose, CA, USA; RemoteTeam size 13
- Status, as YC lists it
- Active
- Industry
- B2B · Productivity
- Location, as listed
- Hong Kong, Hong KongTeam size 11
- Status, as YC lists it
- Active
- Industry
- Consumer · Content
- Location, as listed
- Singapore, SingaporeTeam size 70
- Status, as YC lists it
- Acquired
- Industry
- Healthcare · Consumer Health and Wellness
- Location, as listed
- San Francisco, CA, USATeam size 158
- Status, as YC lists it
- Active
- Industry
- Unspecified
- Location, as listed
- San Francisco, CA, USA; Oakland, CA, USA; RemoteTeam size 2
- Status, as YC lists it
- Active
- Industry
- B2B · Security
- Location, as listed
- San Francisco, CA, USA; Palo Alto, CA, USATeam size 11
- Status, as YC lists it
- Inactive
- Industry
- Healthcare · Healthcare Services
- Location, as listed
- San Francisco, CA, USA; Menlo Park, CA, USATeam size 13
- Status, as YC lists it
- Inactive
- Industry
- Consumer · Food and Beverage
- Location, as listed
- San Francisco, CA, USATeam size 26
- Status, as YC lists it
- Inactive
- Industry
- Industrials · Climate
- Location, as listed
- Seattle, WA, USA; San Francisco, CA, USATeam size 2
- Status, as YC lists it
- Acquired
- Industry
- Consumer · Consumer Electronics
- Location, as listed
- Toronto, ON, CanadaTeam size 11
- Status, as YC lists it
- Acquired
- Industry
- Fintech · Asset Management
- Location, as listed
- McLean, VA, USA; RemoteTeam size 65
- Status, as YC lists it
- Acquired
- Industry
- Healthcare · Consumer Health and Wellness
- Location, as listed
- San Francisco, CA, USATeam size 51
- Status, as YC lists it
- Inactive
- Industry
- Consumer · Job and Career Services
- Location, as listed
- New York City, NY, USA; New York, NY, USATeam size 50
- Status, as YC lists it
- Acquired
- Industry
- Healthcare · Consumer Health and Wellness
- Location, as listed
- San Francisco, CA, USATeam size 2
- Status, as YC lists it
- Inactive
- Industry
- B2B · Productivity
- Location, as listed
- San Francisco, CA, USATeam size 2
- Status, as YC lists it
- Acquired
- Industry
- Healthcare · Diagnostics
- Location, as listed
- Bangkok, Thailand; Düsseldorf, NRW, GermanyTeam size 19
- Status, as YC lists it
- Active
- Industry
- B2B · Marketing
- Location, as listed
- San Francisco, CA, USA; Palo Alto, CA, USATeam size 2
- Status, as YC lists it
- Acquired
- Industry
- B2B · Engineering, Product and Design
- Location, as listed
- New York City, NY, USA; New York, NY, USA; RemoteTeam size 17
- Status, as YC lists it
- Acquired
- Industry
- Industrials · Drones
- Location, as listed
- Los Angeles, CA, USA; Santa Monica, CA, USA; RemoteTeam size 200
- Status, as YC lists it
- Active
- Industry
- Healthcare · Medical Devices
- Location, as listed
- San Francisco, CA, USA; South San Francisco, CA, USATeam size 18
- Status, as YC lists it
- Active
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 Winter 2015 batch
The directory lists 110 Winter 2015 companies, most often first listed in San Francisco (58), New York City (14) and Los Angeles (5). YC flags 5 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, Winter 2015 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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