# YC S11

10 dead or acquired startups from batch S11 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.

### Acquired

#### Aisle50
**Category:** Grocery  
**Description:** Grocery deals.

####   
**Codecademy**  
**Category:** Education  
**Description:** The leading online learning platform for technical skills.  
[More info](/content/company/codecademy/index.html)

#### **Compose**  
**Category:** DevOps  
**Description:** We make it easy to run databases. PostgreSQL, Redis, MongoDB…  
[More info](/content/company/compose/index.html)

####   
**Cryptoseal**  
**Category:** Cloud Workload Protection  
**Description:** Server key management, VPN as a Service, Privacy VPN. Sold to…  
[More info](/content/company/cryptoseal/index.html)

### Debteye
**Category:** Fintech  
**Description:** Automate credit counseling.

#### **Embark**  
**Category:** Transportation  
**Description:** Public transit apps. Acquired by Apple in 2013.  
[More info](/content/company/embark/index.html)

### Freshplum
**Category:** Analytics  
**Description:** Analytics with action

#### **Parse**  
**Description:** Parse is the easiest way to build apps.  
[More info](/content/company/parse-s11/index.html)

### Inactive

#### Rentobo
**Category:** Marketplace  
**Description:** The easiest way to find a tenant. Rentobo is a tool that makes it…

#### Zigfu
**Category:** Augmented Reality  
**Description:** Layer above Kinect.