YC W10

7 dead or acquired startups from batch W10 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.

Startups

Answerly

There is no better way to engage with potential customers than by answering their questions. InboxQ makes it easy to find people who have questions about your business, products or general industry.

Cardpool

Cardpool is a gift card exchange marketplace where anybody can buy, sell, or trade their new or pre-owned gift cards. Customers can buy gift cards up to 30% off their face value, sell their gift cards for up to 90% of their face value in cash, trade their gift cards for an Amazon.com Gift Card, or donate their gift card to charity. Cardpool provides free shipping for both buyers and sellers, a 100-day return policy, and policy of only selling gift cards that have no expiration date and no monthly fees.

Creative Market

Marketplace for graphic design assets.

Mixed Media Labs

Newslabs

NewsLabs offers a platform that looks to help "old school" journalists adapt to the web, by giving them help with advertising, SEO, and other issues they may not have had to deal with before.

Optimizely

The first all-in-one operating system for marketing.

Zencoder

Video Encoding API, Open source video player (video.js)