# YC W15

8 dead or acquired startups from batch W15 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.

### 20n

Artificial Intelligence

Using AI to predict biochemistry for manufacturing and therapeutics

### Automate Ads

Analytics

On a mission to programmatically automate, optimize, and unify your…

### Omniref

Developer Tools

Sticky notes for code.

(We're building a community-powered,…

### Outbound

Messaging

Create automated messages -- email, iOS/Android push, SMS and web…

### Raven Tech

Our vision is to build the next generation of iOS or Android, to…

### Shift Labs

Hardware

Makers of simple, affordable medical devices. Our award-winning…

### Tech in Asia

Media

Tech in Asia (YC W15) is the largest English-language technology…

### Vest

Fintech

Bringing wider access to financial derivatives.