Industry

YC Engineering, Product and Design Companies

610 Y Combinator engineering, product and design startups with verified founder contacts, batch info, and company data.

610

Companies

480

Active

Acquired

Public

YC Company Directory

50 companies

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Company	Batch	Description	Status	Location	Team	Founders	Reveal
Alkali	X25	The smarter way to estimate steel.	Active	Houston, TX, USA	2	Emmett Goodman, Victor Miller	Reveal
Attune	X25	Faster builds, zero effort.	Active	San Francisco, CA, USA	3	Xin Ding	Reveal
Bloom	X25	Build and share mobile apps in seconds	Active	—	2	David Oort Alonso, Sirian Maathuis, David Alonso	Reveal
Capacitive	X25	The data gateway for agents.	Active	San Francisco, CA, USA	2	Kevin Treehan, Rohan Radhakeesoon	Reveal
cubic	X25	AI-powered code review platform	Active	London, England, United Kingdom	6	Paul Sanglé-Ferrière, Paul Sanglé-ferrière	Reveal
Docket	X25	AI agents for web testing	Active	San Francisco, CA, USA	2	Nishant Hooda, Boris Skurikhin	Reveal
HelixDB	X25	The fastest & most scalable graph-vector database on the market	Active	London, England, United Kingdom	6	George Curtis, Xavier Cochran	Reveal
Human Behavior	X25	Understand your users beyond the numbers	Active	San Francisco, CA, USA	3	Amogh Chaturvedi	Reveal
Nimbic AI	X25	Automatically write and update internal docs with every code commit.	Active	San Francisco, CA, USA	3	Akshath M, Ishan Khare, Ishan Mehta, Akshath M.	Reveal
Photonium	X25	AI-Powered Optical Consulting & Software	Active	New York City, NY, USA	5	Jennifer Song, Adam Mhatre	Reveal
Plexe	X25	Open-source agents to build predictive ML models from a prompt	Active	London, England, United Kingdom	2	Vaibhav Dubey, Marcello De Bernardi	Reveal
Refresh	X25	Training gyms for computer use and software engineering work	Active	San Francisco, CA, USA	8	Christopher Settles, Erik Quintanilla	Reveal
StarSling	X25	Self-Driving CI: fast AI-native GitHub Actions runners	Active	San Francisco, CA, USA	3	Yonas Beshawred, Daniel Worku	Reveal
Theorem	X25	Program verification so even your systems engineers can vibecode	Active	San Francisco, CA, USA	4	Jason Gross, Rajashree Agrawal	Reveal
Vybe	X25	Secure internal apps. Built by AI in seconds. Powered by your data.	Active	San Francisco, CA, USA	8	Quang Hoang, Fabien Devos	Reveal
Aether	W24	AI sales platform for home services	Active	San Francisco, CA, USA	8	Zayne Sagar, Shelby Bons	Reveal
Agentic Labs	W24	AI system design tools for dev teams	Active	New York City, NY, USA	2	Maksim Ivanov	Reveal
Andon Labs	W24	Autonomous organizations without humans in the loop	Active	San Francisco, CA, USA	8	Lukas Petersson	Reveal
Topological	S25	Physics-based foundation models for CAD optimization.	Active	—	2	Nicole Ma, Zeyneb Kaya	Reveal
Topological	S25	Physics-based foundation models for CAD optimization.	Active	San Francisco, CA, USA	2	Nicole Ma, Zeyneb Kaya	Reveal
TraceRoot.AI	S25	Open source self-improving layer for AI agents	Active	San Francisco, CA, USA	3	Xinwei He	Reveal
Wafer	S25	AI that makes AI fast	Active	San Francisco, CA, USA	10	Emilio Andere, Steven Arellano	Reveal
Wafer	S25	AI that makes AI fast	Active	San Francisco, CA, USA	4	Emilio Andere, Steven Arellano	Reveal
Aspect	F25	Intelligent media storage for creative teams.	Active	New York City, NY, USA	3	Gurish Sharma, Edison Chiu, Bright Xu	Reveal
AtlasGrid	F25	Accelerate Product Iteration	Active	San Francisco, CA, USA; Remote	6	Oleg Kostour, Aram Aghababyan, Anton Krutiansky	Reveal
Caddy	F25	Your Personal AI for everyday work. Lives in your texts.	Active	New York City, NY, USA	5	Connor Waslo, Rajiv Sancheti	Reveal
Caddy	F25	The voice interface that works proactively for you	Active	—	3	Connor Waslo, Rajiv Sancheti	Reveal
Compyle	F25	The coding agent that actually collaborates with you	Active	San Francisco, CA, USA	2	Jonathan Miranda, Mark Nazzaro	Reveal
dari.dev	F25	The Routing Layer for AI Agents	Active	San Francisco, CA, USA	2	Avyay Varadarajan, Benjamin Hong	Reveal
Fastshot	F25	Lovable for mobile apps	Active	San Francisco, CA, USA	3	Dmitry Fatkhi, Elvira Dzhuraeva	Reveal
Fastshot	F25	Lovable for mobile apps	Active	—	3	Dmitry Fatkhi, Elvira Dzhuraeva	Reveal
hillclimb	F25	The world's first human superintelligence community	Active	San Francisco, CA, USA	3	Jun Park, Ibrakhim Ustelbay	Reveal
Inspector	F25	AI IDE for front-end development	Active	San Francisco, CA, USA	2	Quentin Romero Lauro, Michael Klikushin	Reveal
JSX Tool	F25	AI-First In-Browser IDE for React Development	Active	—	2	Dan Hyman	Reveal
Lemma	F25	Production Monitoring for AI agents	Active	San Francisco, CA, USA	2	Jerry Zhang, Cole Gawin	Reveal
Lemma	F25	Continuous learning for AI agents	Active	San Francisco, CA, USA	2	Jerry Zhang, Cole Gawin	Reveal
Locus	F25	Payment infrastructure for AI agents	Active	San Francisco, CA, USA	2	Cole Dermott	Reveal
Minro	F25	Identify churn risk and stay close to users at scale	Active	San Francisco, CA, USA	2	Samika Sanghvi, Siddhant Lad	Reveal
MOVEdot	F25	AI Agents for Hardware Engineering	Active	San Francisco, CA, USA	10	Girish Radhakrishnan, Bruno Finco	Reveal
MOVEdot	F25	AI Agents for Hardware Engineering	Active	San Francisco, CA, USA	10	Girish Radhakrishnan, Bruno Finco	Reveal
OpenBuilder	F25	The vibe coding platform where builders actually finish.	Active	San Francisco, CA, USA	3	Paul Li, James Jiang	Reveal
Radius	F25	Code and browse in the same place	Active	San Francisco, CA, USA	2	Quentin Romero Lauro, Michael Klikushin	Reveal
Rivet	F25	Visual editor to design in production code	Active	San Francisco, CA, USA	—	Sam Gorman	Reveal
Rovr	F25	AI FDE Engine that runs your engineering workflows	Inactive	San Francisco, CA, USA	3	Arnav Jain, Yash Jain, Nithik Yekollu	Reveal
Semble AI	F25	Autonomous building-system design for construction companies.	Active	San Francisco, CA, USA	2	Jonathan Tyshler, Ethan Boyers	Reveal
Semiotic	F25	Studio-Grade Design at Scale	Active	San Francisco, CA, USA	3	Michael Roberson, Bryan Grisales, Brandon Yao	Reveal
Sourcebot	F25	Helping humans and AI agents understand massive codebases	Active	San Francisco, CA, USA	2	Michael Sukkarieh, Brendan Kellam	Reveal
Specific	F25	AWS for coding agents	Active	Stockholm, Stockholm County, Sweden	2	Fabian Lindfors, Iman Radjavi	Reveal
The Context Company	F25	Monitor AI agents and understand user behavior	Active	San Francisco, CA, USA	2	Arman Kumaraswamy, Rohil Agarwal	Reveal
The Context Company	F25	Monitor AI agents and understand user behavior	Active	San Francisco, CA, USA	2	Arman Kumaraswamy, Rohil Agarwal	Reveal

Batch Distribution

XX2615 XX2515 WW2624 WW2528 WW2457 WW2353

Status Breakdown

Active480 Acquired73 Inactive56 Public1

Top Locations

San Francisco342 New York City36 London20 New York20 Los Angeles13 Austin8

About YC Engineering, Product and Design Companies

Y Combinator has funded 610 engineering, product and design 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 engineering, product and design innovation globally.

480 of these companies are currently active. 73 have been acquired. 1 have gone public. VCBacked tracks verified founder contact information, team sizes, and company status for every YC engineering, product and design startup.

Related Industries

B2B3278 Healthcare805 Fintech709 Consumer654 Industrials489 Infrastructure303 Productivity208 Real Estate and Construction184

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