Y Combinator companies

The social network for your close friends.

Basilica is an API that embeds high-dimensional data like images and…

Online and phone ordering for restaurant takeout and delivery

Last-mile delivery for perishables.

Note taking workspace for B2B sales teams

Building the first sensor enabled marketplace for repeat purchases

Brain Longevity

Building infrastructure to expand scope and quality of virtual care

Bunkerhill is the agentic AI platform for health systems

Helping creators monetize

Encarte is building 1-click checkout for all online stores.

All your notes, tasks, and files in one super-fast workspace.

Online school for Chinese to learn in-demand digital skills

The autonomous tax firm

Benefits for independent workers.

We Create Superior Data By Making Annotation Competitive

No code app builder.

Cherry lets employees choose their own workplace perks.

Cityfurnish - Commitment-free furniture rentals for a better you!

Bring your most important groups closer together

The phone that gives families peace of mind about aging parents

White-label Bookface for companies and communities!

Software for the commercial services industry.

Cosmic is an AI-powered headless CMS

Higher Ed's Best Friend - integrated academic operations software.

CredPal is a buy now pay later company in Africa that allows…

Building the operating system for developing world merchants

Develop your CI/CD pipelines as code and run them anywhere

Daily telehealth care for people with COPD, CHF, hypertension, and…

Datamode (datamode.com) is a tool for engineers to instantly diagnose…

The all-in-one HR and payroll platform for global teams

AI-powered sales coaching

Managed equipment data pipelines for manufacturers

On demand ephemeral environments to run manual and automated tests.

Automate paperwork by turning documents into structured data.

Acquired by Alarm.com - We make existing apartment access smart.

Secure secrets. Prevent breaches. Keep teams moving.

Reduce payment fraud

Eclipse Foods is building the future of dairy using micelles, the…

Edyst is a peer-to-peer online learning platform where students learn…

Acquired by Brex. Building digital payments infrastructure.

Helping great teams hire better frontline workers, faster.

Precision-first therapies

QA Bots for Games

ExcepGen

One stop shop for creators to launch, manage & grow their knowledge…

The best way for any business to offer delivery.

AI-driven learning, content, and coaching for sales teams

FLOWER CO. sells weed on the internet.

Online job simulations for companies to train, and then hire, students

The everything store for restaurants in LATAM.

Unified API for financial data aggregators.

Fuzzing as a Service

Geosite is an enterprise SaaS platform for spatial data.

Glide turns spreadsheets into beautiful, intelligent apps.

coinbase for derivatives

Intuitive, easy-to-remember short links - powered by AI.

We deliver affordable renewable energy direct to customers and are…

Simplifying Payments and Compliance for Construction Suppliers

The AI CSR Platform

Heart makes electric airplanes with an all-electric range of 250 miles

A collaborative repository for user feedback.

AI-powered sleep coach learns and optimizes your sleep

Enabling better self care with at-home hormone tracking.

The first extensible browser for iOS

We built the world's first automated digital pathology lab.

Smart gels for local drug delivery to the gut

Intelline makes the world's most efficient fuel agnostic engines for…

Safe & Secure Cash Management for Businesses

Flying motorcycles

Intercom for WeChat, help companies to acquire, engage, retain…

1st federally regulated exchange where people can trade on events

AI tax filing for complex returns

E-signatures with identity verification for Latin America

Find furnished rentals and compatible housemates for 1-12 month stays

Making car ownership more inclusive, flexible and simple.

Generative AI for frontline worker hiring

24/7 emergency maintenance department for property managers and…

Living therapies for pets first, and their people next

Lezzoo is an on-demand delivery Superapp for Iraq.

The safest way to buy and sell collectibles

We make $1,000 Amazon Go stores.

We turn CO2 into battery-grade graphite and oxygen.

Autonomous trucks to fully automate long-haul freight shipping

MedCrypt gives medical device vendors cybersecurity features in a few…

First IoT reliability platform for debugging, monitoring, OTA updates

We make it easier for B2B companies to transact with one another

Mobot is a QA-as-a-service platform using actual mechanical robots

India's largest crypto investing paltform

Nabis is the largest licensed cannabis wholesale platform.

Building Payments for the Next Billion.

Frozen beauty products.

We put farms inside restaurants, so customers get healthier food and…

The core engine of supply chain in LATAM

Modern fundraising software for political campaigns and nonprofits.

Cloud Development Environments with one click

Research and data to make progress against the world’s largest…

Outbound AI Agents for Education, Insurance, and Travel

Reshaping industrial quality with AI, hardware, and software