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
Pax	S24	AI Broker for Tariff Refunds	Active	San Francisco, CA, USA	10	Penny Chen, Chris Le, Christopher Le	Reveal
Phonely	S24	AI call centers	Active	—	10	Will Bodewes, Nisal Ranasinghe	Reveal
Pinnacle	S24	API & SDK for RCS (the next-generation of texting)	Active	San Francisco, CA, USA	2	Sean Roades, Ivan Zhang	Reveal
Pipeshift	S24	Ultra-low latency inference cloud for real-time workloads	Active	San Francisco, CA, USA	10	Arko C, Enrique Ferrao, Pranav Reddy, Arko Chattopadhyay	Reveal
Poka Labs	S24	The modern operating system for chemical manufacturing.	Active	San Francisco, CA, USA	3	Andrew Bass, Malay Shah	Reveal
Poka Labs	S24	Helping industrial manufacturers win deals fast, at the right price.	Active	San Francisco, CA, USA	5	Andrew Bass, Malay Shah	Reveal
Polymet	S24	AI Product Designer	Active	Istanbul, Istanbul, Turkey	3	Yusuf Hilmi, Furkan Köseoğlu	Reveal
Pre	S24	The AI accountability agent for startup founders	Active	Lake Oswego, OR, USA	2	Darius \	Reveal
Presti AI	S24	Helping furniture companies create product visuals with AI	Active	Paris, Île-de-France, France	16	Nabil Toumi, Saad Bencherif, Hamza Bennis, Abdellah Lamrani Alaoui, Abdellah Alaoui	Reveal
Presti AI	S24	Helping furniture companies create product visuals with AI	Active	—	25	Nabil Toumi, Saad Bencherif, Hamza Bennis, Abdellah Lamrani Alaoui	Reveal
ProhostAI	S24	AI Property Manager for Airbnb & Short-Term Rental Hosts	Active	New York City, NY, USA	5	Bill Ulammandakh, Andrew Lawson	Reveal
ProhostAI	S24	AI Property Manager for Airbnb & Short-Term Rental Hosts	Active	San Francisco, CA, USA	5	Bill Ulammandakh, Andrew Lawson	Reveal
Promi	S24	Optimizing ecommerce pricing with dynamic, personalized discounts	Active	—	2	Peter Moot, Jiaxin Lin	Reveal
Promi	S24	Providing quick product and design feedback via digital twins	Active	San Francisco, CA, USA	2	Peter Moot, Jiaxin Lin	Reveal
Proxis	S24	The platform for enterprise AI agent automations, starting with email.	Active	San Francisco, CA, USA	3	Liam Collins	Reveal
Proxis	S24	The platform for enterprise AI agent automations, starting with email.	Active	—	3	Liam Collins	Reveal
Pulse	S24	Production-grade unstructured document extraction	Active	San Francisco, CA, USA	22	Sid Manchkanti, Ritvik Pandey	Reveal
Quetzal	S24	Simple, LLM-first translation and internationalization for software	Active	San Francisco, CA, USA	2	John Thompson, Brendan Agliardo	Reveal
Random Labs	S24	Random labs is building long running autonomous coding agents.	Active	San Francisco, CA, USA	—	Kiran (Random Labs), Mihir Chintawar	Reveal
Rastro	S24	The fastest way to launch product catalogs.	Active	London, England, United Kingdom	3	Baptiste Cumin, Augustin Baudoin, Papa Sougou Wele	Reveal
ReactWise	S24	AI Co-Pilot for Chemical Process Optimization	Active	London, England, United Kingdom	2	Alexander Pomberger, Daniel Wigh	Reveal
ReactWise	S24	AI Co-Pilot for Chemical Process Optimization	Active	San Francisco, CA, USA	2	Alexander Pomberger, Daniel Wigh	Reveal
Redouble AI	S24	Java-native multi-agentic AI operating system for enterprise	Active	New York City, NY, USA; Remote	3	Martin Bittner, Andrey Santrosyan	Reveal
Refactor	S24	Deploying secure and reliable AI agents across healthcare, retail,…	Active	San Francisco, CA, USA	3	Arnav Joshi, Daniel Zamoshchin	Reveal
RentFlow	S24	The first 'Buy Now Pay Later' solution for Commercial Rent	Active	San Francisco, CA, USA	3	Joseph Thalinjan, Alix Maurin	Reveal
Rescript	S24	AI for Legal & Public Policy Teams	Active	Washington, DC, USA	2	Nikhil Ajjarapu, Alexander Pesendorfer	Reveal
RetroFix	S24	Automate any workflow using plain english	Active	New York City, NY, USA	2	Isaac Toscano, Daniel Portela	Reveal
RetroFix	S24	Automate any workflow using plain english	Active	San Francisco, CA, USA	2	Isaac Toscano, Daniel Portela	Reveal
RiskAngle	S24	AI medical summaries in minutes	Inactive	San Francisco, CA, USA	2	Bill Chen, William Hu	Reveal
RiskAngle	S24	AI medical summaries in minutes	Inactive	San Francisco, CA, USA	2	Bill Chen, William Hu	Reveal
Roger	S24	Roger is an AI SDR that automates outbound sales and follows up 24/7.	Active	—	2	Rithwik Pattikonda	Reveal
RowBoat Labs	S24	Open-source AI-assisted agent builder	Active	San Francisco, CA, USA	3	Arjun Maheswaran, Ramnique Singh	Reveal
RunLocal AI	S24	AI agent that optimizes inference for embedded compute like Jetson	Active	London, England, United Kingdom	3	Ismail Salim, Ivan Chan, Ciarán O' Rourke	Reveal
Saldor	S24	Making procurement easy	Active	San Francisco, CA, USA	2	Jacob Bland, Jack Cameron	Reveal
Saphira AI	S24	The Enablement Layer for Physical AI	Active	San Francisco, CA, USA	7	Akshay Chalana, Oscar Avatare	Reveal
Scape	S24	The intelligent inbox that works for you	Active	Stockholm, Stockholm County, Sweden	5	Melvin Hagberg	Reveal
Seals AI	S24	AI Employees for Wholesalers & Distributors	Active	San Francisco, CA, USA	4	Luis Mario Garcia, Heber Garza, Javier Gonzalez, Fernando Huerta	Reveal
Seals AI	S24	AI Employees for Wholesalers & Distributors	Active	San Francisco, CA, USA	4	Luis Mario Garcia, Heber Garza, Javier Gonzalez, Fernando Huerta	Reveal
Sepal AI	S24	Data Development for Advanced AI	Acquired	San Francisco, CA, USA	15	Robi Lin, Kat Hu, Fedor Paretsky	Reveal
Sepal AI	S24	Data Development for Advanced AI	Acquired	San Francisco, CA, USA	15	Robi Lin, Kat Hu	Reveal
Simple AI	S24	AI voice that sells	Active	San Francisco, CA, USA	11	Catheryn Li, Zach Kamran	Reveal
Simple AI	S24	AI voice that sells	Active	San Francisco, CA, USA	11	Catheryn Li, Zach Kamran	Reveal
Simplex	S24	AI agents to enroll providers with payors	Active	San Francisco, CA, USA	2	Shreya Karpoor, Marco Nocito	Reveal
Soff	S24	AI Agents for Distributors	Active	San Francisco, CA, USA	6	Berni Hausleitner	Reveal
Sonatoria	S24	Helping Startups Grow Organically	Active	—	2	Jacob Tucker	Reveal
Spherecast	S24	AI Supply Chain Manager for CPG	Active	—	6	Leon Hergert, Paul Dietrich, Pascal Schindler	Reveal
Spherecast	S24	AI Supply Chain Manager for CPG	Active	San Francisco, CA, USA	7	Leon Hergert, Paul Dietrich, Pascal Schindler	Reveal
Spur	S24	Spur is your AI QA Engineer. Test your websites with natural language.	Active	New York City, NY, USA	8	Sneha Sivakumar, Anushka Nijhawan	Reveal
Spur	S24	Spur is your AI QA Engineer. Test your websites with natural language.	Active	San Francisco, CA, USA	8	Sneha Sivakumar, Anushka Nijhawan	Reveal
Stempad	S24	Notion for science	Active	Toronto, ON, Canada	1	Ralph Rouhana	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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