Industry

YC B2B Companies

3,278 Y Combinator b2b startups with verified founder contacts, batch info, and company data.

3,278

Companies

964

Active

Acquired

Public

YC Company Directory

50 companies

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Company	Batch	Description	Status	Location	Team	Founders	Reveal
Pollen	W26	AI Agents for Customer Success	Active	San Francisco, CA, USA	3	Aldrin Ong, Noah Yin, Jeffrey Yum	Reveal
Pollen	W26	AI agents that automate customer success	Active	San Francisco, CA, USA	3	Noah Yin, Aldrin Ong, Jeffrey Yum	Reveal
Pollinate	W26	AI Agents for the supply chain.	Active	San Francisco, CA, USA	2	Corey Berther, Adeep Mitra	Reveal
Polymath	W26	Simulation environments to train & evaluate long-horizon AI agents	Active	San Francisco, CA, USA	6	Dylan Ma, Naren Yenuganti	Reveal
Polymorph	W26	Building secure polymorphic apps	Active	San Francisco, CA, USA	4	Andrew Sy	Reveal
Protent	W26	Real time intelligence for law enforcement & security teams.	Active	San Francisco, CA, USA	2	Srihan Balaji, Abhisheik Sharma	Reveal
Q2Q	W26	We help private equity teams find acquisition targets faster	Active	San Francisco, CA, USA	2	Brianna Lin, Claire Wu	Reveal
Q2Q	W26	We help private equity teams find acquisition targets faster	Inactive	San Francisco, CA, USA	2	Brianna Lin	Reveal
RamAIn	W26	Automate any UI task with natural language	Active	San Francisco, CA, USA	4	Shourya Vir Jain, Vansh Ramani	Reveal
Reframe	W26	AI-native, hardware procurement marketplace	Active	San Francisco, CA, USA	1	Bryan Zin	Reveal
Ressl AI	W26	Train, eval and build autonomous agents	Active	Bengaluru, KA, India	3	Arushi Gandhi, Abhishek E, Abhishek Eswaran	Reveal
Return Signals	W26	AI luxury concierge for E-commerce brands	Active	San Francisco, CA, USA	2	Ilya Valmianski, Alejandro Zaniolo	Reveal
REV1	W26	Claude Code for Mechanical Engineers	Active	San Francisco, CA, USA	2	Alex Rivero, Louis Liu	Reveal
Revion	W26	Intelligence for Automotive Operations	Active	New York City, NY, USA	10	Zaki GW, Hanbo Xie	Reveal
Rhizome AI	W26	Agent Platform for Life Sciences	Active	New York City, NY, USA; Remote	1	Chetan Mishra	Reveal
Robby	W26	AI agents that grow revenue for home services businesses	Active	New York City, NY, USA	3	Vineet Jammalamadaka, Feroze Mohideen, Joseph Schwarzmann	Reveal
Rubric AI	W26	Reasoning and verification infra for AI	Active	New York City, NY, USA	1	Pragya Saboo	Reveal
RunAnywhere	W26	The default way of running On-Device AI at Scale	Active	—	2	Shubham Malhotra, Sanchit Monga	Reveal
RunAnywhere	W26	The default way of running on-device AI at Scale	Active	San Francisco, CA, USA	5	Sanchit Monga, Shubham Malhotra	Reveal
Salus	W26	Guardrails to validate your agent's actions before they execute	Active	San Francisco, CA, USA	2	Kevin Pan, Vedant Singh	Reveal
Salus	W26	Guardrails to validate your agent's actions before they execute	Active	San Francisco, CA, USA	2	Vedant Singh, Kevin Pan	Reveal
Samora AI	W26	Multilingual voice agents that outperform humans	Active	—	8	Kartik Sawhney, Vineeth Kumar, Shakul Raj Sonker	Reveal
Sentrial	W26	Datadog for Agent Reliability	Active	San Francisco, CA, USA	2	Neel Sharma, Anay Shukla	Reveal
Shofo	W26	The World's Largest Video Library	Active	San Francisco, CA, USA	4	Braiden Dishman, Andre Braga, Alexzendor Misra	Reveal
shortkit	W26	Media infra for consumer apps	Active	—	2	Neil Bhammar, Michael Seleman	Reveal
SideKit	W26	One package to take your mobile app to production.	Active	San Francisco, CA, USA	2	Ethan Pronev, Ashish Selvaraj	Reveal
Signals	W26	iMessage revenue channel for DTC brands that brings customers back	Active	San Francisco, CA, USA	2	Ilya Valmianski, Alejandro Zaniolo	Reveal
Sila	W26	Agent-Native Messaging Platform	Active	New York City, NY, USA	2	Mith Paresh Patel, Carl Huang	Reveal
Sitefire	W26	Marketing suite for the agentic web	Active	BY, Germany	2	Jochen Madler, Vincent Jeltsch	Reveal
Skillsync	W26	Move context across agents and teammates	Active	San Francisco, CA, USA	2	Narayana Aaditya Ganeshkumar, Nishant Joshi, Narayana Ganeshkumar	Reveal
Sonarly	W26	AI engineer to triage and fix your production alerts	Active	San Francisco, CA, USA	2	Dimittri Choudhury, Alexandre Klobb	Reveal
Sparkles	W26	Make everyone on your team an engineer	Active	London, England, United Kingdom	1	Ai Daniil Bekirov, Ai Bekirov	Reveal
Stilta	W26	Agentic AI for intellectual property	Active	Stockholm, Stockholm County, Sweden	4	Oskar Block, Oscar Adamsson, Tobias Estreen, Petrus Werner	Reveal
Synthetic Sciences	W26	Infrastructure for Autonomous Science	Active	San Francisco, CA, USA	2	Ishaan Gangwani, Aayam Bansal	Reveal
Talking Computers	W26	Real-time interaction models for voice agents	Active	Toronto, ON, Canada	2	Zayaan Mulla, Parsa Bahraminejad	Reveal
Tensol	W26	AI Employees for your Business, Powered by OpenClaw	Active	San Francisco, CA, USA	2	Oliviero Pinotti, Pratik Satija	Reveal
Tepali	W26	AI operating system for modern medspas	Active	New York City, NY, USA	2	Chrisvin Jabamani, Vishnu Pathmanaban	Reveal
Terminal Use	W26	AI-native transformation for operations-heavy companies	Active	San Francisco, CA, USA	4	Vivek Raja, Filip Balucha, Stavros Filosidis	Reveal
Terminal Use	W26	Vercel for background agents	Active	San Francisco, CA, USA	4	Filip Balucha, Stavros Filosidis, Vivek Raja	Reveal
The Token Company	W26	Compression middleware that improves LLM outputs	Active	San Francisco, CA, USA	2	Otso Veisterä	Reveal
Traverse	W26	Research lab solving non-verifiable work	Active	San Francisco, CA, USA	1	Lance Yan	Reveal
Traverse	W26	Data research company building RL envs for non-deterministic work	Active	San Francisco, CA, USA	2	Lance Yan, Zachary Yu	Reveal
Unisson	W26	AI agents that automate B2B software implementation	Active	San Francisco, CA, USA	2	Varun Mathur, Tom Achache	Reveal
Unisson	W26	The AI product specialist for customer-facing teams	Active	San Francisco, CA, USA	2	Varun Mathur, Tom Achache	Reveal
Valgo	W26	Algorithmic safety validation tools for autonomy.	Active	San Mateo, CA, USA	2	Robert Moss, Sydney Katz	Reveal
Valgo	W26	Insurance risk layer for physical AI	Active	San Francisco, CA, USA	3	Robert Moss, Sydney Katz, Jon Qian	Reveal
Vector Legal	W26	A premier AI-native law firm & legal operating system for Startups.	Active	San Francisco, CA, USA	5	Mitch Duncombe, Keenan Venuti	Reveal
Vela	W26	The AI Scheduling Assistant that truly knows you.	Active	San Francisco, CA, USA	4	Gobhanu Sasankar Korisepati, Saatvik Suryajit Korisepati	Reveal
Vela	W26	AI Recruiting Coordinator for Executive Search	Active	San Francisco, CA, USA	2	Gobhanu Sasankar Korisepati, Saatvik Suryajit Korisepati, Gobhanu Korisepati	Reveal
Velum Labs	W26	Firewall that controls access to information across AI and humans	Active	San Francisco, CA, USA	2	Benjamin Muñoz-Cerro, Alen Rubilar-Muñoz	Reveal

Batch Distribution

XX2693 XX2574 WW26160 WW25132 WW24220 SS2637

Status Breakdown

Active964 Inactive26 Acquired10

Top Locations

San Francisco661 New York City71 London31 New York17 Paris13 Stockholm12

About YC B2B Companies

Y Combinator has funded 3,278 b2b companies since its founding in 2005. These startups span from early-stage pre-launch to publicly traded companies, making YC one of the most prolific backers of b2b innovation globally.

964 of these companies are currently active. 10 have been acquired. VCBacked tracks verified founder contact information, team sizes, and company status for every YC b2b startup.

Related Industries

Healthcare805 Fintech709 Consumer654 Engineering, Product and Design610 Industrials489 Infrastructure303 Productivity208 Real Estate and Construction184

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