Founders Directory LogoFounders Directory

Discover the next generation of startups.

A curated directory of high-growth companies backed by the world's most prestigious venture capital firms.

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Circle Medical logo

Circle Medical

YCombinator

Modern primary care via video and in-person

Circle Medical is a venture-backed Y-Combinator healthcare startup on a mission to bring quality, delightful primary care to everyone on the planet. Built by top-tier physicians, engineers, and designers, our medical practice and underlying technology have pioneered how people find and receive care. Our focus on building directly for our patients and providers to address serious care accessibility issues has enabled us to grow over 3X year-over-year. We’re now using our most recent round of funding from WELL Health, backed by Sir Li Ka-shing, to continue building out our hybrid in-clinic and telemedicine model across all fifty states. As we enter the hypergrowth phase, we are looking for deeply motivated team players who are driven to solve some of the biggest challenges in healthcare so that people can live longer and healthier lives. More about us can be found on our website!

San Francisco, CAY Combinator LogoSummer 2015ActiveConsumer Health ServicesPrimary Care
Clipboard logo

Clipboard

YCombinator

Every shift, Covered.

Our Why At Clipboard, our mission is to uplift as many communities as possible. We do this by connecting professionals with the workplaces that need amazing workers, helping people achieve financial stability for themselves and their families all across the U.S. Our How Clipboard is an app-based marketplace where workplaces post calls for help and workers answer. Every year, we help hundreds of thousands of workers fill millions of shifts across the U.S. We’re the leader in Long-Term Care staffing and are rapidly expanding into Home Health, Hospitals, and more. Our Team Founded in 2016, we are a remote-first team of over 1,000 people working to uplift communities across the country.

San FranciscoY Combinator LogoWinter 2017ActiveMarketplaceConsumer Health ServicesHealth TechHealthcareSan Francisco
Cova logo

Cova

YCombinator

AI-Native Home Care Agency

Cova is an AI-native home care agency, licensed in Michigan. We serve Medicaid, LTCI, and private-pay patients; we pay caregivers the highest base rate in the state; and we help unpaid family caregivers get paid through programs they didn't know they qualified for. Our entire operation runs on AI agents, which means less overhead and more value passed directly to the people doing the real work.

Detroit, MIY Combinator LogoSummer 2026ActiveArtificial IntelligenceConsumer Health ServicesHealthcare
Digipals logo

Digipals

YCombinator

The future of Social in the age of AI

Social networks are dead. Social media became more media than social. My friends aren't on social media anymore - it's one third ads, one third content from strangers, and one third AI slop. Our social lives are fragmented across dozens of different apps - iMessage, WhatsApp, Find My, Partiful, and Venmo. Digipals is the first AI-native social operating system that improves our relationships with friends. We built ambient AI agents that use social context from our location, calendar, and photos to take action and write code in our group chats. We are the last social platform anyone will ever need. Launch Video https://youtu.be/KW2tjLl6sxM

San FranciscoY Combinator LogoFall 2025ActiveConsumerSocial MediaSocialSocial NetworkAISan Francisco
Ekpa logo

Ekpa

YCombinator

Building Autonomous Research Agents for Trading

Ekpa is an innovative startup in the tech space.

BostonY Combinator LogoSummer 2026ActiveConsumer FinanceBoston
Freeport Markets logo

Freeport Markets

YCombinator

Trade Anything

Freeport is a trading platform for pre-IPO shares, equities, crypto, and perpetual futures. Our AI analysts turn trusted social and financial media into a real-time feed of market-moving news and actionable trade ideas.

New York City, NYY Combinator LogoFall 2025ActiveFintechCrypto / Web3InvestingConsumer FinanceAI
Greentoe logo

Greentoe

YCombinator

"Name Your Price" for products

Greentoe is a next generation e-commerce marketplace that enables consumers to set the price for the products they want to buy. Created to change the way people shop, Greentoe shakes up the traditional retail model by putting consumers in the driver's seat. They make an offer on a product and the site connects them to the retailers who are willing to accept the offer. The site benefits both consumers and retailers – shoppers can buy products at the lowest price available while retailers reduce inventory and acquire new customers.

New York City, NYY Combinator LogoSummer 2014ActiveMarketplaceConsumerE-commerce
iSono Health logo

iSono Health

YCombinator

AI-powered platform for Accessible and Personalized Breast Health…

The iSono Health platform combines automated 3D ultrasound technology with cloud computation and artificial intelligence to empower women and their physicians with early detection and monitoring of breast cancer. Our patented compact ultrasound scanner captures 3D images through automatic scanning of whole breast volume in 1 min. The device connects to a smartphone/tablet/laptop and is controlled by our mobile app. The data is transferred to a secure cloud for image processing and storage. Our machine learning algorithm uses acoustic biomarkers to identify abnormal masses. Our platform’s automated operation and software expands ultrasound use in point-of-care diagnostics as well as monitoring of breast health at home, walk-in and mobile clinics. iSono Health offers women and healthcare providers : Safety: No Radiation Actionable Feedback with AI Fast: 2min Scan Easy to Use

San FranciscoY Combinator LogoWinter 2016ActiveArtificial IntelligenceConsumer Health ServicesMedical DevicesSan Francisco
Labdoor logo

Labdoor

YCombinator

Labdoor is building the trusted online drugstore.

Labdoor is a marketplace where consumers research, find, and buy the best supplements. To verify the purity and potency of these products, Labdoor first buys and tests actual dietary supplement samples: • We send each product to an FDA-registered laboratory for a detailed chemical analysis. • Our scientists then collect the laboratory results and use internal algorithms to translate this data into simple grades and rankings for consumers. • Find a product you love? Click "buy it now" to activate in-app purchases.

San FranciscoY Combinator LogoWinter 2015ActiveMarketplaceConsumer Health ServicesSan Francisco
Miniswap logo

Miniswap

YCombinator

The Marketplace for Complex Hobbies

Miniswap a marketplace for complex hobbies, starting with Warhammer. In hobbies as complex as Warhammer, finding what you want on general marketplaces is a huge pain. Filters don't work, free-form listings mean that products are regularly misidentified, and piles of counterfeit junk crowd search results. Miniswap saves hobbyists from this chaos with its catalogue of more than 20,000 unique miniatures. Sellers match their listings against Miniswap's catalogue giving buyers more information and structure as they shop. The global market for tabletop games is estimated to be worth $20B in 2025 and Warhammer alone is projected to grow to $3B by 2030. By capturing the market in this untapped niche, Miniswap is strongly positioned to bringing greater transparency, simplicity, and connectivity into adjacent verticals. Miniswap's founding team merges deep domain knowledge with elite programming expertise and years of experience in business consulting and startups. Co-founders Zak and Will met while studying together at Cambridge, bonded over their love of Warhammer and early modern history. They have been best friends ever since.

San FranciscoY Combinator LogoFall 2025ActiveMarketplaceConsumerGamingSan Francisco
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