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.

16Companies

VC Backer

All VCsYCombinator

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All IndustriesB2BMarketplaceTravelFintechConsumerHealthcareEducationIndustrialsReal Estate and ConstructionGovernmentUnspecified

Employees

Any Size1-1011-5051-200201-500501+

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Any Amount< $1M$1M - $5M$5M - $20M$20M+
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Opennote logo

Opennote

YCombinator

The notebook that thinks with you.

Opennote is a notebook with an AI thinking partner built in. Feynman lives in your work: it edits your writing, references your knowledge and the web, runs background tasks, and gives feedback as you work.

San FranciscoY Combinator LogoSummer 2025ActiveAI-Enhanced LearningEducationSaaSConsumerProductivitySan Francisco
Outschool logo

Outschool

YCombinator

A live online learning platform that empowers kids ages 3–18.

Outschool is an innovative education platform that offers a variety of engaging, small-group classes online. Unlike traditional classes, Outschool classes give kids the unique opportunity to explore their interests in-depth via interactive, live video by experienced, independent educators. When Outschool was founded in 2015, homeschoolers were the first to discover our classes, but it wasn’t long before kids in conventional schools began supplementing their education with fun and unique, interest-based classes. During the COVID-19 pandemic, Outschool became vital to families who wanted to keep kids learning, social, and pursuing their passions. Today, Outschool offers more than 140,000 live online classes to more than 1,000,000 learners in 183 countries worldwide.

San FranciscoY Combinator LogoWinter 2016ActiveEducationMarketplaceSan Francisco
Padlet logo

Padlet

YCombinator

Papyrus → Parchment → Paper → Padlet

We are easily bored. It's the one thing that unites humanity in 2020. No one wants to read twenty paragraphs of text, or sit through forty verbose slides. Yet, we keep making them, boring everyone out of their minds. We are building more beautiful and fun alternatives to traditional documents. They're less of a pain-in-the-ass to create, and a lot less waterboard-y to view. Checkout a Padlet timeline (https://padl.et/timeline), or a Padlet map (https://padl.et/map) to see what we're talking about. Over ten million people all over the world use Padlet. Most satisfyingly, for millions of kids, Padlet is their first experience of creating things on the Internet. People say we are improving education. People say we are making them more creative. People say a lot of things.

San FranciscoY Combinator LogoWinter 2013ActiveEducationSaaSSan Francisco
Panorama Education logo

Panorama Education

YCombinator

Improving education for every student.

Panorama Education partners with K-12 districts to support student success in the classroom and beyond through a secure, research-backed software platform for AI, student support, and community voice and engagement. Serving 15 million students nationwide, Panorama helps educators boost achievement, attendance, behavior, and readiness for graduation and beyond.

Los Angeles, CAY Combinator LogoSummer 2013ActiveEducationSaaSB2BLos Angeles
Parrot logo

Parrot

YCombinator

TikTok for language learning

Parrot is the TikTok for language learning. We turn doomscrolling into fluency with personalized short-form videos. Power users scroll for 6 hours/week on Parrot. Our team of engineers have lived the frustration of ineffective apps and learning methods - we’re building the first language platform that actually works.

San FranciscoY Combinator LogoFall 2025ActiveAI-Enhanced LearningEducationSan Francisco
Platzi logo

Platzi

YCombinator

Turning company knowledge into expert teams

Platzi turns a company's scattered knowledge into training that automatically builds expert teams. It captures how an organization's top performers sell, build, and operate, then shapes that knowledge into structured training that brings the rest of the workforce to their level. The courses are created instantly from each company's own knowledge, self-updating as it changes. It's training that never goes stale, and no one has to maintain. And just as pilots learn to fly in a simulator, Platzi measures mastery in simulated work scenarios, like a sales rep handling a hard objection or a frontline worker holding the line on safety while a manager pushes to cut corners. The test is the work, not course completion.

San FranciscoY Combinator LogoWinter 2015ActiveAI-Enhanced LearningEducationeLearningSales EnablementHR TechSan Francisco
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