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
Stempad	S24	Notion for science	Active	—	1	Ralph Rouhana	Reveal
Storia AI	S24	Open source AI copilot that knows your company's code and its context	Active	San Francisco, CA, USA	2	Julia Turc	Reveal
Substrate	S24	Artificial Intelligence for your medical billing team	Active	San Francisco, CA, USA; Remote	2	Inderpal Singh, Ayo Omojola	Reveal
Substrate	S24	Artificial Intelligence for your medical billing team	Active	—	2	Inderpal Singh, Ayo Omojola	Reveal
Superunit	S24	Faster, more profitable background checks with AI	Active	San Francisco, CA, USA	2	Peter Marler, Zach Yellin-Flaherty	Reveal
SureBright	S24	Apple Care-like warranty program for every retailer	Active	New Delhi, DL, India	35	Manish Chauhan, Sanket Munjal, Kai Jia	Reveal
Synnax	S24	Unified Hardware Control and Data Processing Software	Active	Denver, CO, USA	5	Emiliano Bonilla, Patrick Dotson, Elham Islam	Reveal
Synnax	S24	Unified Hardware Control and Data Processing Software	Active	—	5	Emiliano Bonilla, Patrick Dotson, Elham Islam	Reveal
Tabula	S24	Autonomous Accounting Software	Active	Berlin, Berlin, Germany	13	Tim Hermes, Markus Jungnickel, Kilian Justus	Reveal
Tabula	S24	AI Copilot for SMEs & their accountants in Europe	Active	Berlin, Germany	5	Tim Hermes, Markus Jungnickel, Kilian Justus	Reveal
Tandem	S24	AI-native office leasing broker	Active	San Francisco, CA, USA	22	Rafi Sands, Sean Miller, Brendan Suh	Reveal
TaxGPT	S24	AI tax assistant for professionals and businesses	Active	San Francisco, CA, USA	28	Kashif Ali, Isabella Maceda-Ali	Reveal
TaxGPT	S24	AI tax assistant for professionals and businesses	Active	San Francisco, CA, USA	28	Kashif Ali, Isabella Maceda-Ali	Reveal
TaxGPT	S24	AI tax assistant for professionals and businesses	Active	San Francisco, CA, USA	45	Kashif Ali, Isabella Maceda-Ali, Isabella Ali	Reveal
Terra	S24	Design and sell products in minutes	Active	—	6	Lev Glushkovskii, Dylan McFarland	Reveal
The Forecasting Company	S24	Foundation models for time series	Active	Paris, Île-de-France, France	7	Geoffrey Negiar, Joachim Fainberg	Reveal
The Forecasting Company	S24	Foundation models for time series	Active	Paris, France	7	Geoffrey Negiar, Joachim Fainberg	Reveal
The Synthesis Company	S24	100x faster scientific evidence synthesis	Active	San Francisco, CA, USA	3	Cyrus Nouroozi, Amir Mehr	Reveal
Thunder Compute	S24	VMware for GPUs	Active	San Francisco, CA, USA	9	Carl Peterson, Brian Model	Reveal
Thunder Compute	S24	The world's cheapest GPU cloud	Active	San Francisco, CA, USA	4	Carl Peterson, Brian Model	Reveal
Thyme	S24	The OS for financial advisors	Acquired	San Francisco, CA, USA	2	Daniel Lantz, Fernando San Martin	Reveal
Thyme	S24	The OS for financial advisors	Acquired	San Francisco, CA, USA	2	Daniel Lantz, Fernando San Martin	Reveal
Typa	S24	The content engine that wins attention and drives growth.	Active	San Francisco, CA, USA	2	Andrew Chung, Junyoung Park	Reveal
Unbound	S24	Use AI tools without fear of data leakage	Active	San Francisco, CA, USA	7	Rajaram Srinivasan, Vignesh Subbiah	Reveal
Undermind	S24	An AI agent for scientific research	Active	San Francisco, CA, USA	—	Joshua Ramette, Tom Hartke	Reveal
Undermind	S24	An AI agent for scientific research	Active	San Francisco, CA, USA	—	Joshua Ramette, Tom Hartke	Reveal
Unsloth AI	S24	Open-Source Reinforcement Learning (RL) & Fine-tuning for LLMs.	Active	San Francisco, CA, USA	8	Daniel Han, Michael Han	Reveal
Vibe	S24	Making everyone a software engineer	Active	San Francisco, CA, USA	2	Ray Morgan, Katia Bazzi	Reveal
VideoGen	S24	Create professional videos in minutes with AI, online or via API	Active	San Francisco, CA, USA	6	Anton Koenig, David Grossman	Reveal
Village Labs	S24	Helping America's businesses become employee owned	Active	New York City, NY, USA	2	Roger Cawdette, Turja Chowdhury	Reveal
Void	S24	The open source Cursor alternative	Active	San Francisco, CA, USA	2	Andrew Pareles, Mathew Pareles	Reveal
Voker	S24	The Agent Analytics Platform	Active	Los Angeles, CA, USA	6	Tyler Postle, Alex Rudolph	Reveal
winfunc	S24	ai-native security engineering for mission critical codebases	Active	—	2	Mufeed VH, Vivek R	Reveal
Zeit AI	S24	The autonomous data engineer for the mid-market	Active	Munich, BY, Germany	12	Leopold von Waldthausen, Marvin Christopher Bornstein, Leopold von Waldthausen	Reveal
ZeroPath	S24	Automatically find and fix your software vulnerabilities	Active	San Francisco, CA, USA	10	Dean Valentine, Nathan Hrncirik, Raphael Karger, Etienne Lunetta	Reveal
Zoa Research	S24	Powerful quantitative forecasting models	Active	New York City, NY, USA	5	Greg Volynsky, Sam Damashek	Reveal
Zuni	S24	AI agents for high-value professional work	Active	London, England, United Kingdom; Remote	1	George Seabridge	Reveal
Abundant	F24	Agent simulation and RL for researchers	Active	San Francisco, CA, USA	7	Jesse Hu, Meji Abidoye, Ke Huang	Reveal
Afternoon.co	F24	Bookkeeping, compliance and tax for founders	Active	New York, NY, USA	4	Roman Zubenko, Benjamin Paik	Reveal
Alex	F24	The Cursor for Xcode	Active	San Francisco, CA, USA	3	Daniel Edrisian	Reveal
Archil	F24	The high-performance file system that connects AI to data	Active	San Francisco, CA, USA	11	Hunter Leath	Reveal
AutoComputer	F24	Desktop RPA with AI computer use	Active	San Francisco, CA, USA	2	Madhav Singhal	Reveal
AutoComputer	F24	Desktop RPA with AI computer use	Active	San Francisco, CA, USA	2	Madhav Singhal	Reveal
Beglaubigt.de	F24	The legal back-office for European founders - the incorporation API…	Active	BY, Germany	15	Alexander Sporenberg, Felix Gerlach	Reveal
BrowserBook	F24	The Browser Automation IDE	Active	New York, NY, USA	3	Christopher Schlaepfer, Jorrie Brettin	Reveal
Canvas	F24	Claude Code for GTM Engineering	Active	—	3	Essam Sleiman	Reveal
Canvas	F24	Building AI systems that improve from experience.	Active	San Francisco, CA, USA	3	Essam Sleiman	Reveal
Capy	F24	The IDE for the parallel age	Active	San Francisco, CA, USA	6	Nalin Semwal, Justin Sun	Reveal
Cekura	F24	Voice AI and Chat AI agents: Testing and Observability	Active	San Francisco, CA, USA	15	Tarush Agarwal, Shashij Gupta, Sidhant Kabra	Reveal
Cekura	F24	Voice AI and Chat AI agents: Testing and Observability	Active	San Francisco, CA, USA	15	Tarush Agarwal, Shashij Gupta, Sidhant Kabra	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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