W23
Acquired
Arroyo
Developer Tools
Cloud-native stream processing
YC W23
19 dead or acquired startups from batch W23 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.
W23
Acquired
Bluebirds
B2B
Automate outbound with signals
W23
Acquired
Booth AI
Artificial Intelligence
Generative AI Photographer for E-Commerce
W23
Acquired
Cardinal
Generative AI
Your AI product backlog
W23
Inactive
CodeParrot AI
Artificial Intelligence
Helps Developers build stunning UI Lightning Fast ⚡️
W23
Inactive
CreatorML
B2B
Foundation Model for Human Attention
W23
Acquired
DAGWorks Inc.
AIOps
Open source tools & services for reliable AI Agents & AI Applications
W23
Inactive
Fabius
Generative AI
AI to improve Sales Calls
W23
Acquired
Fintool
Artificial Intelligence
Financial copilot for institutional investors
W23
Acquired
Helicone
AIOps
LLM Observability for Developers
W23
Acquired
Langfuse
Developer Tools
Open source LLM engineering platform
W23
Inactive
Neptyne
Generative AI
The programmable spreadsheet.
W23
Acquired
Outerbase
Developer Tools
The interface for your database
W23
Inactive
Parabolic
Generative AI
AI assistant for customer support
W23
Acquired
PlayAI
Generative AI
Our mission is to make Voice AI accessible and useful to all.
W23
Inactive
Sorted
SaaS
Instant SaaS management
W23
Acquired
StackAI
Enterprise
The Enterprise AI Transformation Platform
W23
Inactive
Struct
Fintech
Multi-lingual AI Voice Agents
W23
Acquired
Traceloop
Developer Tools
Know what your LLM is doing — and why it’s failing