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.

914Companies

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Ossus logo

Ossus

YCombinator

Intelligence for cultural institutions

We build intelligence for cultural institutions. Our first commercial product is for the literature industry with a focus on school and public libraries. It is a AI-native OS for libraries, that helps librarians save time on tedious tasks and lets them focus on their patrons.

San FranciscoY Combinator LogoWinter 2026ActiveCultureAISan Francisco
Outrove logo

Outrove

YCombinator

Synthetic populations for decisions

Surveys ask people what they think they’ll do. Focus groups ask a handful of people to explain behavior they often don’t understand themselves. Outrove simulates entire populations instead. We create AI agents that model how real audiences behave, letting companies, governments, and investors test decisions in minutes: what product to launch, what price to set, what campaign to run, what policy will work, or how a market will move. The output is not another dashboard. It’s a prediction of what will happen, which segments will drive it, and what decision is most likely to win.

San FranciscoY Combinator LogoSummer 2025ActiveArtificial IntelligenceSan 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
Overshoot logo

Overshoot

YCombinator

AI Infra for real-time vision applications

Overshoot makes it easy for developers to build and run real-time vision applications. AI can see and understand the physical world. This unlocks new applications in physical security, safety, gaming, robotics and general consumer products. Soon, video agents will watch your home and your pet when you’re away. However, existing platforms make it painful for developers to build these real-time applications. Slow inference. Limited model availability. Break at scale. Overshoot solves this. Today, 300+ developers connect live video feeds to the largest collection of Vision Language Models with 3 lines of code. And get responses in less than 200ms. 10x faster than any existing inference platform. Zero infra headache. Our moat is focus. Image and Video are fundamentally different modalities from text. By focusing on them, we are able to make strong technical leaps from codec, streaming protocols to inference engines. Younes and Zakaria are cousins. Zakaria graduated top of his class at LSE and MIT, and later built low-latency high-throughput pricing systems (surge) at Uber and inference engines at Meta. He previously built and sold a software product and won several prominent AI hackathons. Younes was a founding engineer at Cosmonio (later acquired by Intel). He built a training and serving Computer Vision platform from scratch. He witnessed firsthand customers abandoning traditional Computer Vision because it lacked the “general” intelligence LLMs have today. Together we’ve shipped large-scale systems and know where they break.

San FranciscoY Combinator LogoWinter 2026ActiveSan Francisco
Oximy logo

Oximy

YCombinator

See and control all AI activity across your enterprise

Oximy helps enterprises understand and manage AI usage across their workforce. Used by security, finance, and transformation teams to track adoption, control spend, and manage governance as AI scales.

San FranciscoY Combinator LogoWinter 2026ActiveSan Francisco
Oxus logo

Oxus

YCombinator

AI-powered automation for internal audit workflows

Oxus automates internal audits for pre-IPO and public companies using AI. Companies including leading payroll providers and public biotech companies work with us to streamline audit workflows and get audits done 10x faster. Learn more at: https://www.oxus-ai.com/

San FranciscoY Combinator LogoWinter 2026ActiveSan 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
PagerDuty logo

PagerDuty

YCombinator

Real-time visibility into critical apps and services all in one place.

PagerDuty is an operations performance platform delivering visibility and actionable intelligence across the entire incident lifecycle. Their SaaS-based solution empowers over 10,000 small, mid-size and enterprise global customers such as Comcast, eHarmony, Slack and Lululemon with the insight to intelligently respond to critical disruptions for exceptional customer experience. PagerDuty was founded to deliver a new and innovative approach to increase business response and efficiency. When brand reputation depends on customer satisfaction, PagerDuty arms businesses with the insight to proactively manage incidents and events that may impact customers across their IT environment.

San FranciscoY Combinator LogoSummer 2010PublicDevOpsMonitoringSan Francisco
Palette logo

Palette

YCombinator

An interactive AI video generation and editing platform

Palette is an interactive multimodal generation platform that helps people create, personalize, and maintain multimedia content at scale. Instead of relying on fragmented creative tools or manual production workflows, Palette enables them to generate, edit, and transform text, images, and video using natural language. Whether creating customer experiences, product content, educational materials, or internal communications, Palette makes professional-quality media generation accessible through a single interface.

San FranciscoY Combinator LogoSummer 2026ActiveGenerative AIVideoAISan Francisco
Pally logo

Pally

YCombinator

Intelligent Unified Inbox + Personal CRM

We spend our lives in messaging apps. Slack. iMessage. WhatsApp. We face a constant stream of information, introductions, and things we need to do. What if you could bring together every message, from every platform, in a Superhuman-like experience, with AI agents that automatically complete your action items? That’s exactly what we’re building at Pally; a future where you never need to check another inbox again.

San FranciscoY Combinator LogoSummer 2025ActiveArtificial IntelligenceConsumerB2BProductivitySearchSan Francisco
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