San Francisco

YC Companies in San Francisco

2,672 Y Combinator startups based in San Francisco with verified founder contacts and company data.

2,672

Companies

San Francisco

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YC Company Directory

50 companies

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Company	Batch	Description	Status	Location	Team	Founders	Reveal
Stamp	W25	The AI Secretary for Email and Calendar.	Active	San Francisco, CA, USA	1	Archit Mehta	Reveal
Steinmetz	W25	Next-Generation Power Electronics	Active	San Francisco, CA, USA	5	Owen Brake, Ethan Childerhose	Reveal
SubImage	W25	The Open-Core Security Graph	Active	San Francisco, CA, USA	4	Alex Chantavy, Kunaal Sikka	Reveal
Subtrace	W25	Zero code network tracer	Active	San Francisco, CA, USA	2	Adhityaa Chandrasekar, Sachin Sridhar	Reveal
superglue	W25	AI that fixes enterprise glue	Active	San Francisco, CA, USA	4	Adina Goerres, Stefan Faistenauer	Reveal
Swerve	W25	Chat with AI Characters	Active	San Francisco, CA, USA	2	Soroush Saryazdi, Jason Zhou	Reveal
Swerve	W25	Chat with AI Characters	Active	San Francisco, CA, USA	2	Soroush Saryazdi, Jason Zhou	Reveal
TamLabs	W25	Agent teams for complex work	Active	San Francisco, CA, USA	2	Joshua Doolan, Ben Doolan	Reveal
Tejas AI	W25	Risk Decisioning Platform for Banks	Active	San Francisco, CA, USA	2	Gaurav Luhariwala	Reveal
TensorPool	W25	Vercel For GPUs	Acquired	San Francisco, CA, USA	3	Tycho Svoboda, Joshua Martinez, Hlumelo Notshe	Reveal
Toothy AI	W25	AI for insurance verification & billing at dental clinics	Active	San Francisco, CA, USA	15	Johnny Chen, Matt Kerrigan, Tejas Konduru	Reveal
Trace	W25	Voice AI Customer Support for Financial Services	Active	San Francisco, CA, USA	3	Saner Cakir, Kayla Lee	Reveal
TrainLoop	W25	Reasoning Fine-Tuning	Active	San Francisco, CA, USA	6	Jackson Stokes, Mason Pierce	Reveal
Trava	W25	AI agents for global trade compliance	Active	San Francisco, CA, USA	1	Pushkar Lanka	Reveal
Trim	W25	A foundation model for physics.	Active	San Francisco, CA, USA	3	Emanuel Gordis	Reveal
Truffle AI	W25	AWS for AI Agents	Active	San Francisco, CA, USA	2	Shaunak Srivastava, Rahul Karajgikar	Reveal
Tweeks.io	W25	Lovable for Chrome Plugins	Active	San Francisco, CA, USA	2	Jason Madeano, Matt Stallone	Reveal
Uncommon Therapeutics	W25	A Disease Focused Biotech, Building Multiple Billion Dollar Drugs	Active	San Francisco, CA, USA	2	Noah Auerhahn, Ryan Lim	Reveal
Verbiflow	W25	Outbound Sequencing Infrastructure for Startups	Active	San Francisco, CA, USA	2	Kashyab Ambarani, Rishi Mahadevan	Reveal
Vocality Health	W25	Voice AI for medical language translation	Active	San Francisco, CA, USA	2	Brogan McPartland	Reveal
Weave	W25	AI to understand and then route engineering work	Active	San Francisco, CA, USA	14	Adam Cohen, Andrew Churchill	Reveal
Wildcard	W25	AEO/GEO for E-Commerce and Retail	Active	San Francisco, CA, USA	—	Kaushik Mahorker	Reveal
Woz	W25	AI platform enabling anyone to build and scale software businesses	Active	San Francisco, CA, USA	6	Ben Collins, Brad Eckert	Reveal
Woz	W25	AI platform enabling anyone to build and scale software businesses	Active	San Francisco, CA, USA	6	Ben Collins, Brad Eckert	Reveal
ZeroEntropy	W25	Artificial Specialized Intelligence	Acquired	San Francisco, CA, USA	6	Ghita Houir Alami, Nicholas Pipitone, Ghita Alami	Reveal
Acrely	S25	Enterprise Voice Agents	Active	San Francisco, CA, USA	6	Alek Stefanov, Derek Armfield	Reveal
Adaptional	S25	AI underwriting for insurance	Active	San Francisco, CA, USA	—	Kevin Cox, Suril Kantaria	Reveal
AgentMail	S25	Email Inboxes for AI Agents	Active	San Francisco, CA, USA	10	Haakam Aujla, Michael Kim, Adi Singh	Reveal
April	S25	Voice AI Executive Assistant	Active	San Francisco, CA, USA	2	Neha Suresh, Akash Thakur	Reveal
Astor	S25	AI advisor for retail investors	Active	San Francisco, CA, USA	5	Bruno Koba, Daniel Tulha Hochstetler	Reveal
Astor	S25	AI advisor for retail investors	Active	San Francisco, CA, USA	5	Bruno Koba, Daniel Tulha Hochstetler	Reveal
Autosana	S25	AI agents for E2E testing across mobile & web	Active	San Francisco, CA, USA	5	Yuvan Sundrani, Jason Steinberg	Reveal
Avent	S25	AI agents for industrial commerce	Active	San Francisco, CA, USA	5	Abhay Kalra	Reveal
b12 Labs	S25	Making hard molecules for Pharma and Biotech	Active	San Francisco, CA, USA	3	Zlatko Jončev, Andres Bran	Reveal
Bizzy AI	S25	Bizzy works 24/7 so you never miss a lead.	Active	San Francisco, CA, USA	—	Rithvik Gabri, Ansh Sheth	Reveal
Blank Bio	S25	RNA intelligence for precision medicine	Active	San Francisco, CA, USA	6	Jonny Hsu, Philip Fradkin, Ian Shi	Reveal
Blue	S25	Your phone finally has someone to run it. Plug in Blue, just ask.	Active	San Francisco, CA, USA	6	Omar Abdelaziz, Farhan Hossain, Peter Krogh	Reveal
BootLoop	S25	Firmware in minutes, not months - rigorously tested on real hardware	Active	San Francisco, CA, USA	3	Noah Pacik-Nelson, Chris Markus, Christopher Markus	Reveal
burnt	S25	Agentic Operating System for Food Supply Chain	Active	San Francisco, CA, USA	3	Joseph Jacob, Rhea Karimpanal, Chandru Shanumugasundaram, Chandru Shanmugasundaram	Reveal
Cactus	S25	Tiny Edge AI For Tiny Devices	Active	San Francisco, CA, USA	8	Roman Shemet, Henry Ndubuaku	Reveal
Candytrail	S25	AI agents for in-person sales teams, starting with coaching	Active	San Francisco, CA, USA	2	Aditya Mahna, Ayush Mahna	Reveal
Certus AI	S25	Replacing the restaurant phone line with Voice AI	Active	San Francisco, CA, USA	3	Gurveer Singh, Adam Gamieldien, Isaac Nichols	Reveal
Certus AI	S25	Replacing the restaurant phone line with Voice AI	Active	San Francisco, CA, USA	8	Gurveer Singh, Adam Gamieldien, Isaac Nichols	Reveal
CLODO	S25	Planet-scale people discovery.	Active	San Francisco, CA, USA	2	Sid Rajaram, Rithvik Chuppala, Arnav Verma	Reveal
cocreate	S25	video production software	Active	San Francisco, CA, USA	10	Tamish Pulappadi, Archish Arun	Reveal
ContextFort	S25	Visibility and Controls for Browser Agents	Active	San Francisco, CA, USA	2	Ashwin Ramachandran	Reveal
Convexia	S25	The world's first AI-maximalist pharma company	Active	San Francisco, CA, USA	4	Ayaan Parikh, Rahul Vijayan	Reveal
Conviction	S25	Anyone Can Trade	Active	San Francisco, CA, USA	2	Aria Vikram, Tony Yamin	Reveal
Cyberdesk	S25	Self learning computer use agent for developers	Active	San Francisco, CA, USA	2	Mahmoud Al-Madi, Alan Duong	Reveal
Cyberdesk	S25	Self learning computer use agent for developers	Active	San Francisco, CA, USA	2	Mahmoud Al-Madi, Alan Duong	Reveal