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
Alchemize	X26	Ship more code with confidence	Active	San Francisco, CA, USA	2	Robert Hou, Samuel Fu	Reveal
Armature	X26	Improve how users experience your product through AI Agents	Active	San Francisco, CA, USA	3	Theodore Otzenberger, Louis Scremin	Reveal
Atrisa	X26	AI Agents for Analog Circuit Design	Active	San Francisco, CA, USA	3	Sayan Mitra, Rithik Jain, Atman Kar	Reveal
Gigacatalyst	X26	AI-first embedded analytics and reports for customer success	Active	San Francisco, CA, USA	3	Namanyay Goel	Reveal
InsForge	X26	The agent-native AWS	Active	San Francisco, CA, USA	6	Hang Huang, Tony Chang, Claas Ahrens	Reveal
Lightsprint	X26	Software factory for product teams	Active	San Francisco, CA, USA	3	Ben Ong, Benedict Chan, Heng Hong Lee	Reveal
Linzumi	X26	Team chat to command all your company's coding agents	Active	San Francisco, CA, USA	3	Sean Grove	Reveal
Oddpool	X26	Institutional infrastructure for prediction markets	Active	San Francisco, CA, USA	2	Avi Arora, Ritesh Malpani	Reveal
OpenProse	X26	An open-source operating system for reliable long-running agents	Active	San Francisco, CA, USA; Remote	3	Dan Barrett	Reveal
Replicas	X26	Run any coding agent harness in the cloud	Active	San Francisco, CA, USA	2	Connor Loi, Saai Arora	Reveal
Runtime	X26	Build and run internal agents, without managing the infrastructure	Active	San Francisco, CA, USA	3	Gus Trigos, Carlos Volante	Reveal
Stage	X26	Code review platform for humans and agents	Active	San Francisco, CA, USA	2	Dean Stratakos, Charles Pan	Reveal
Superlog	X26	Make software self-healing	Active	San Francisco, CA, USA	2	Nicolò Magnante, Arseniy Shishaev	Reveal
Superset	X26	Building self-improving software	Active	San Francisco, CA, USA	3	Kiet Ho, Satya Patel, Avi Peltz	Reveal
TesterArmy	X26	Test your app with AI, catch bugs before users do	Active	San Francisco, CA, USA; Remote	4	Szymon Rybczak, Oskar Kwaśniewski	Reveal
1code (21st.dev)	W26	Orchestration layer for coding agents	Active	San Francisco, CA, USA	3	Serafim Korablev, Sergey Bunas	Reveal
21st	W26	UI building blocks for the agentic internet	Active	San Francisco, CA, USA	3	Serafim Korablev, Sergey Bunas	Reveal
Approxima	W26	Your software should build itself.	Active	Toronto, ON, Canada	2	Ethan Pronev, Ashish Selvaraj	Reveal
Ashr	W26	Automated Multi-Modal Testing for Agents	Active	San Francisco, CA, USA	2	Shreyas Kaps, Rohan Kulkarni	Reveal
Aurorin CAD	W26	Claude code for Mechanical Engineers	Active	San Francisco, CA, USA	1	Michael Baron	Reveal
Button Computer	W26	The tiny computer built for voice AI.	Active	San Francisco, CA, USA	1	Chris Nolet	Reveal
Canary	W26	The first AI QA engineer that understands your code	Active	San Francisco, CA, USA	2	Aakash Mahalingam, Viswesh N G	Reveal
Canary	W26	The first AI QA engineer that understands your codebase	Active	San Francisco, CA, USA	4	Viswesh N G	Reveal
Corelayer	W26	AI production engineer for regulated industries	Active	San Francisco, CA, USA	3	Mitch Radhuber, Shipra Jha	Reveal
Corelayer	W26	AI on-call engineer that debugs using data	Active	San Francisco, CA, USA	2	Shipra Jha, Mitch Radhuber	Reveal
Glue	W26	Evals for frontier research agents	Active	San Francisco, CA, USA	1	Perbhat Kumar	Reveal
Martini	W26	AI Video Production for Professionals	Active	San Francisco, CA, USA	2	Koh Terai, Long Hoang	Reveal
Reframe	W26	AI-native, hardware procurement marketplace	Active	San Francisco, CA, USA	1	Bryan Zin	Reveal
REV1	W26	Claude Code for Mechanical Engineers	Active	San Francisco, CA, USA	2	Alex Rivero, Louis Liu	Reveal
Sentrial	W26	Datadog for Agent Reliability	Active	San Francisco, CA, USA	2	Neel Sharma, Anay Shukla	Reveal
shortkit	W26	Media infra for consumer apps	Active	—	2	Neil Bhammar, Michael Seleman	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
Synthetic Sciences	W26	Infrastructure for Autonomous Science	Active	San Francisco, CA, USA	2	Ishaan Gangwani, Aayam Bansal	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
Visibl Semiconductors	W26	Custom silicon for power electronics	Active	San Francisco, CA, USA	3	Bryce Neil, Jordon Kashanchi	Reveal
Zatanna	W26	Turning all software into agent-first APIs	Active	San Francisco, CA, USA	2	Alex Blackwell, Tarun Vedula	Reveal
a0.dev	W25	We make mobile apps using AI.	Active	San Francisco, CA, USA	3	Seth Setse, Ayomide Omolewa	Reveal
A1Base	W25	Twilio for AI Agents	Active	San Francisco, CA, USA	2	Pennie Huang	Reveal
A1Zap by A1Base	W25	The social network layer for AI apps	Active	San Francisco, CA, USA	2	Pasha Rayan, Pennie Huang	Reveal
Adam	W25	AI Powered CAD	Active	San Francisco, CA, USA	4	Zach Dive, Aaron Li	Reveal
Artifact	W25	An Collaborative, AI-native IDE for Hardware Engineers	Active	Los Angeles, CA, USA	4	Antony Samuel, Corbin Klett	Reveal
Agent FM	S26	One group chat to hear and steer your coding agents.	Active	San Francisco, CA, USA	2	Aniket Deshpande, Mugdhaa Patankar	Reveal
hardware intelligence	S26	AI tools for the chips your AI runs on	Active	San Francisco, CA, USA	2	Athreya Anand, Rishov Sarkar	Reveal
HyperProbe	S26	The runtime data layer for agents to monitor and debug apps	Active	San Francisco, CA, USA	8	Shailendra Singh, Karan Raina	Reveal
Vendo	S26	Let your users build their own features on top of your product	Active	San Francisco, CA, USA	2	Nour Zahzah, Yousef Helal	Reveal
herdr	F26	building the open agent runtime	Active	Ankara, Ankara, Turkey	1	Can Celik	Reveal
Simantic	F26	Firmware simulation for AI agents	Active	Waterloo, ON, Canada	4	Seungmin Hong, Ahnaf Shahriar	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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