S21
Inactive
Abbot
Developer Tools
Your Customer Success Co-Pilot
YC S21
16 dead or acquired startups from batch S21 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.
S21
Acquired
Beeper
SaaS
One chat app to rule them all
S21
Inactive
BlackOakTV
Entertainment
A video subscription platform serving black viewers and creators.
S21
Inactive
Buzzle
AI-Enhanced Learning
Automatic voice-of-customer trends & metrics from sales conversations.
S21
Inactive
Cache
Marketplace
Online convenience stores fulfilled by tiny, automated dark stores.
S21
Inactive
Gobillion
E-commerce
Pinduoduo for India
S21
Acquired
Level
Fintech
Fast and simple fintech financing
S21
Acquired
Mentum
Artificial Intelligence
AI-Powered Assistant for Procurement and Strategic Sourcing
S21
Inactive
Mindmesh
SaaS
Mindmesh is the virtual desk that puts you in control.
S21
Inactive
Onsite Pro
Construction
Revolutionizing digital selling within HVAC
S21
Inactive
Opkit
SaaS
AI phone calls for the US healthcare industry
S21
Acquired
Positional
SaaS
A modern platform for content marketing & SEO.
S21
Inactive
Quest
Community
Audio career advice
S21
Inactive
Squire.ai
Artificial Intelligence
Never code alone.
S21
Acquired
Telivy
Security
Automate your cyber security risk assessments
S21
Inactive
Wabi
SaaS
We are Shopify for the $15B creator economy in LATAM