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YC S15

15 dead or acquired startups from batch S15 with completed research reports.

Every startup playbook in our database, ready to build

Each deep-dive includes a post-mortem, step-by-step rebuild plan, and a technical spec you can paste straight into Claude Code, Cursor, or Lovable.

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S15
Inactive
Afrostream logo

Afrostream

Video

AFROSTREAM is Netflix for African-American and African content…

S15
Inactive
BI

Bistrobot

Food Service Robots & Machines

We make robots that make sandwiches.

S15
Acquired
BE

Blitz Esports

Media

Blitz breaks down the complex world of esports and offers new…

S15
Inactive
Call9 logo

Call9

Call9 delivers true Emergency Medicine and Palliative Care at patients'​ bedsides. Currently in Skilled Nursing Facilities, Call9 decreases the time patients wait to see an EM Physician from an average of 64 minutes to moments in emergency situations. In tandem with 24/7 onsite Clinical Care Specialists*, offsite Emergency Medicine Physicians see, diagnose and treat patients at the bedside via the Call9 proprietary platform. Our focus goes beyond the medicine to assure premium patient-centered care by including patients, caregivers, and families in communications from the start. Today, our proprietary technology-enabled services reduce cost and increase quality-of-care within elder-care facilities. Tomorrow, we redefine emergency medicine. *Clinical Care Specialists(TM) are elite emergency responders. Excellent bedside manner and rigorous continuing emergency training make Call9, PC's CCSs a unique specialty.

S15
Inactive
CL

CareLedger

Health Tech

CareLedger helps companies save money on healthcare expenses by…

S15
Acquired
Cloudstitch logo

Cloudstitch

Developer Tools

Power your website with Google Spreadsheets.Acquired by Instabase…

S15
Acquired
Gigster logo

Gigster

Build and manage distributed teams

S15
Acquired
Interviewed logo

Interviewed

Recruiting

Job simulations and assessments. See candidates in action doing the…

S15
Acquired
OpenInvest logo

OpenInvest

Fintech

Values based personalization at scale for asset and wealth management

S15
Inactive
RE

Reduced Energy Microsystems

Artificial Intelligence

Building the lowest-power silicon for embedded deep learning and…

S15
Acquired
Second Measure logo

Second Measure

Fintech

Unlock the power of transaction data.

S15
Acquired
Triplebyte logo

Triplebyte

SaaS

Intelligent technical hiring.

S15
Inactive
VOIQ logo

VOIQ

SaaS

Conversational AI VoiceBots for Business

S15
Acquired
Willing logo

Willing

Documents

The best way to make your legal will.

S15
Acquired
Xfers logo

Xfers

Fintech

Xfers makes it possible for people to make and receive payments via…

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