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
Precip	W24	High precision AI weather models	Active	Ann Arbor, MI, USA; Remote	3	Jesse Vollmar, Michael Asher	Reveal
Preloop	W24	Translate your experimental scripts into production ML services	Active	Seattle, WA, USA	2	Tejas Hosangadi, Nikith Hosangadi	Reveal
Preloop	W24	Translate your experimental scripts into production ML services	Active	—	2	Tejas Hosangadi	Reveal
Pretzel AI	W24	AI tooling	Active	Berlin, Berlin, Germany	2	Prasoon Shukla, Ramon Garate	Reveal
PromptArmor	W24	LLM Security and Compliance	Active	San Francisco, CA, USA	—	Shankar Krishnan, Vikram Jayanthi	Reveal
ProSights	W24	ProSights is a data / AI transformation partner to PE-backed portcos.	Active	New York City, NY, USA	14	Justin Wu, Aaron Guo	Reveal
Pythagora	W24	Worlds first all-in-one AI development platform.	Active	—	7	Zvonimir Sabljić, Leon Ostrež	Reveal
Quary	W24	The first in-browser analytics engineering platform	Inactive	London, UK	2	Benjamin King, Louis Jordan	Reveal
Quary	W24	The first in-browser analytics engineering platform	Inactive	London, England, United Kingdom	2	Benjamin King, Louis Jordan	Reveal
Quivr	W24	AI-powered auto-resolutions and reply suggestions for customer…	Active	Paris, Île-de-France, France	5	Stan Girard, Antoine Dewez, Joseph Miller	Reveal
Quivr	W24	AI-powered auto-resolutions and reply suggestions for customer…	Active	Paris, France	5	Stan Girard, Antoine Dewez	Reveal
Raindrop	W24	Sentry for AI Agents	Active	San Francisco, CA, USA	6	Zubin Koticha, Alexis Gauba, Ben Hylak	Reveal
Raindrop	W24	Sentry for AI Agents	Active	San Francisco, CA, USA	9	Zubin Koticha, Alexis Gauba, Ben Hylak	Reveal
Reducto	W24	The complete agentic document platform	Active	San Francisco, CA, USA	30	Adit Abraham, Raunak Chowdhuri	Reveal
Reform	W24	Workflow automation. Built for logistics.	Active	San Francisco, CA, USA	13	Omar Abuhashish, Pradhit Gosula	Reveal
Reform	W24	Workflow automation. Built for logistics.	Active	San Francisco, CA, USA	11	Omar Abuhashish, Pradhit Gosula	Reveal
Relari	W24	AI Agent Builder for Software 3.0	Active	San Francisco, CA, USA	2	Yi Zhang, Pasquale Antonante	Reveal
renderlet	W24	Build interactive applications that run anywhere	Active	New York City, NY, USA	2	Sean Isom	Reveal
Reprompt	W24	AI Agents for Location	Active	San Francisco, CA, USA	3	Lukas Martinelli, Rob Balian	Reveal
Resonance	W24	Self-improving content bank for marketing	Acquired	San Francisco, CA, USA	2	Jonathan Ou	Reveal
Resonance	W24	Self-improving content bank for marketing	Active	San Francisco, CA, USA	2	Jonathan Ou	Reveal
Respan	W24	Self-driving observability, evals, and gateway for AI agents	Active	San Francisco, CA, USA	23	Andy Li, Raymond Huang	Reveal
RetailReady	W24	An AI-powered supply chain compliance engine	Active	—	12	Elle Smyth, Sarah Hamer	Reveal
RetailReady	W24	An AI-powered supply chain compliance engine	Active	San Francisco, CA, USA	12	Elle Smyth, Sarah Hamer	Reveal
Retell AI	W24	Supercharge Your Contact Center Operations with AI Phone Agents	Active	San Francisco, CA, USA	50	Bing Wu, Todd Li, Evie Wang, Weijia Yu, Zexia Zhang	Reveal
Risotto	W24	Risotto auto-solves IT support requests using AI	Active	San Francisco, CA, USA; Remote	3	Aron Solberg, Alex Confer, Chris Paul	Reveal
ROE	W24	AI for risk and compliance	Active	San Francisco, CA, USA	9	Richard Meng	Reveal
Ryse	W24	The secondary market for real estate leases	Active	New York, NY, USA	13	Sean Mitchell, Harsh Yadav	Reveal
Ryse	W24	The secondary market for real estate leases	Active	New York City, NY, USA	13	Sean Mitchell, Harsh Yadav	Reveal
Salvy	W24	Mobile carrier for businesses in Brazil	Active	Curitiba, State of Paraná, Brazil	27	Artur Negrão, Hudo Assenco, Maria Eduarda Kumlehn, Lucas Rosa	Reveal
Salvy	W24	Mobile carrier for businesses in Brazil	Active	Curitiba, PR, Brazil	27	Artur Negrão, Hudo Assenco, Maria Eduarda Kumlehn, Lucas Rosa	Reveal
Scout	W24	AI insights for consumer products	Active	San Francisco, CA, USA	3	Sasha Zhang	Reveal
Senso	W24	Control what AI says about you	Active	Toronto, ON, Canada	8	Saroop Bharwani, Thomas Nelson	Reveal
Senso	W24	Control what AI says about you	Active	Toronto, ON, Canada	8	Saroop Bharwani, Thomas Nelson, Nick Seelert	Reveal
Shiboleth	W24	Shiboleth automates lending compliance for financial institutions…	Active	San Francisco, CA, USA	5	Esty Scheiner, Bivu Dhungana	Reveal
Shiboleth	W24	Shiboleth automates lending compliance for financial institutions…	Active	—	5	Esty Scheiner, Bivu Dhungana	Reveal
Silogy	W24	An AI-powered test and debug platform for chip developers	Active	New York City, NY, USA; Remote	3	Kay Li, Paul Kim	Reveal
Solari AI	W24	Gives non-technical team members agents that work right out of the box	Active	New York, NY, USA	1	Sahil Sinha	Reveal
Spark	W24	AI-powered workflows for energy infrastructure	Active	—	5	Julia Wu, Anuj Saigal	Reveal
Spark	W24	AI-powered workflows for energy infrastructure	Active	—	5	Julia Wu, Anuj Saigal	Reveal
Speck	W24	AI Notetaker that automates all your admin work	Active	San Francisco, CA, USA	3	Raghav Pillai	Reveal
Stacksync	W24	Real-time and two-way sync between CRMs and Databases	Active	San Francisco, CA, USA	9	Ruben Burdin, Alexis Favre	Reveal
Stacksync	W24	Real-time and two-way sync between CRMs and Databases	Active	San Francisco, CA, USA	34	Ruben Burdin, Alexis Favre	Reveal
StarJar	W24	Starjar automates inbound document processing workflows for hospitals	Acquired	—	11	Qi Zhang, Ruming Zhen	Reveal
StarJar	W24	Starjar automates inbound document processing workflows for hospitals	Acquired	—	11	Qi Zhang	Reveal
Stitch Technologies	W24	-	Inactive	London, UK	0	Till Kern, Yuriy Oparenko	Reveal
Stitch Technologies	W24	-	Inactive	London, England, United Kingdom	—	Till Kern, Yuriy Oparenko, Raj Dosanjh	Reveal
Superagent	W24	Security for AI-native developers	Active	San Francisco, CA, USA	2	Jordan Milkie, Alan Zabihi, Ismail Pelaseyed	Reveal
sync.	W24	AI lipsync tool for video content creators	Active	San Francisco, CA, USA	13	Prady Modukuru, Prajwal K R, Rudrabha Mukhopadhyay, Pavan Reddy	Reveal
Tamarind Bio	W24	AI Inference Platform for Drug Discovery	Active	—	10	Deniz Kavi, Sherry Liu	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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