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YC S19 131 startups

YC S19 Startups

Every Y Combinator Summer 2019 company we currently index.

Last updated

2026-07-17

Hiring right now 5% 7 of 131

Open roles 250

Most-hired discipline Engineering

The Y Combinator S19 batch (Summer 2019) brought 131 tech startups into our index. This page lists every S19 company we currently track, with logos, taglines, and links straight to their own sites — no paywalled middleman. Notable S19 companies include Hightouch, Prolific, TRM Labs, Actiondesk, and Apero Health. Each profile surfaces team size, founding year, location, and open roles when their careers page is publicly scrapable. The S19 cohort skews toward Dev Tools, Fintech, and Healthcare — common patterns we see in this batch. Recurring tags across these companies: SaaS, Fintech, B2B, Developer Tools, Artificial Intelligence. The directory's filter UI accepts any of them as a query. Geographically, the S19 batch we have leans toward San Francisco, New York, and New York City, with the rest spread across remote-first teams and other hubs. 3 of these are currently flagged as trending based on momentum signals; and the listing refreshes whenever the scrape runs, so changes propagate without a manual edit.

The leading Composable CDP and AI Decisioning platform

MarketingEnterprise SoftwareAI

Making diverse, high-quality data easily available to anyone, anywhere

AIOpsMarketplace

TRM is building a safer financial system for billions of people.

FintechMachine LearningCrypto / Web3

Access all your live data in one place

Modern medical billing

Health TechFinanceDigital Health

Point of sale financing for Latin America's middle class.

FintechE-commerce

Arpeggio Bio develops drugs targeting transcription factors using AI…

BiotechGenomicsDrug discovery

We build better immunotherapies

Developer ToolsSaaS

Hearing aids that work in noisy places, like restaurants, using ML.

Deep LearningHardwareMedical Devices

Banner makes software for CRE owners to manage capital spend

MarketplaceSaaSProptech

Data Visualization

An AI-powered, all-in-one business platform for content creators

A zero inventory, zero returns factory-to-consumer apparel company

Sustainable FashionConsumerE-commerce

SDK for scanning and verifying credit cards and photo IDs in mobile…

PaymentsIdentity

Household needs, from bread to everything.

GroceryConsumerDelivery

Bun is an incredibly fast all-in-one JavaScript toolkit

Developer ToolsOpen Source

Canix makes it easy to get and stay compliant as a cannabis business.

Your global dollar account powered by stablecoins

Human and AI design review for hardware

HardwareSaaSCollaboration

Compound is a wealth manager for people who work at tech companies.

The fastest way for developers to build notifications for their app.

Developer ToolsMessaging

We help restaurants manage their online orders.

Construction & industrial logistics platform.

ConstructionB2BDelivery

Spark-on-Kubernetes Data Engineering Platform

SaaSB2BOpen Source

A better data science notebook.

Developer ToolsMachine Learning

Learn how to build a scalable growth engine

EducationB2BMedia

Dex is a personal CRM that reminds you to keep in touch with the…

SaaSProductivityCRM

Subscription pharmacy for patients with chronic diseases

Helping healthcare workers find their next career opportunity

RecruitingHealthcare

Your startup's all-in-one recruiting solution

Using AI to understand construction plans faster.

Predictive Explorer and Driller for Critical Metal Deposits

AI-Enhanced LearningClimateMining

Delivering fruits and vegetables to multi-segment restaurants and…

GrocerySupply Chain

Modern user-focused observability built on OpenTelemetry

Artificial IntelligenceSaaSOpen Source

Last-mile delivery for satellites.

Commercial Space LaunchHard TechSpace Exploration

Helping families plan and pay for funerals.

India’s first neobank for teenagers

FintechPayments

Supercharged deployment previews for all.

Developer ToolsSaaS

The talent platform for legal

MarketplaceLegalLegalTech

A natural language-driven programming assistant.

Artificial IntelligenceNLP

Flux is building the payment network for alternative payments in…

FintechPayments

Customer data collection, safeguarding, & activation for healthcare

Developer ToolsSaaSB2B

SoFi for trade students

EducationFintech

SaaS that helps renewables & energy storage operate more profitably

ClimateEnergyClimateTech

Chat game universe

GamingMetaverse

Building a better way to meet online.

GEn1E Lifesciences

AI platform accelerating therapies for rare & inflammatory diseases.

Artificial IntelligenceBiotechHealthcare

Pull Requests as a Service

Developer Tools

Robinhood for Southeast Asia (SEA)

Green Canopy NODE

Green Canopy NODE builds sustainable homes fast.

HardwareHousingProptech

We make engineering interviewing look more like real work.

B2BWorkflow AutomationRecruiting

Tax Automation Infrastructure

FintechLatin America

Holy Grail — B2B

Enterprise Software

Fashionable college, NBA and MLS apparel.

E-commerceApparelFashion

In-Person, Hybrid and Virtual Event Management Software

Collaborative data noteboook for business teams

Juno College of Technology

Juno is the university of the future.

AppLovin for the food community

GroceryMarketplaceE-commerce

Using DNA to store data.

GenomicsNanotechnology

Building flying wind turbines.

HardwareClimateRenewable Energy

Copilot for product teams

Artificial IntelligenceGenerative AIB2B

The Self-Hosting Company

HardwareCommunityKubernetes

Online pets supplies for Latin America with over 4000 products & 20…

Legacy helps you test, improve, and freeze your sperm

Fertility TechConsumer Health ServicesDigital Health

LineLeap gets customers to the fun, faster.

Global mobility platform for companies and employees

SaaSHuman ResourcesImmigration

Building the NASDAQ for Real Estate.

FintechCrypto / Web3Real Estate

Local news, information and classifieds for India's small town users

We build robots for dull, dirty, and dangerous jobs.

RoboticsDronesManufacturing

Empowering local retailers with tech that works for them.

MarketplaceMarketingRetail Tech

Meridian Industries

Index is the modern business intelligence platform

SaaSB2BAnalytics

Method Financial

Financial connectivity API for consumer liabilities

Training and connecting untapped talent with global opportunities

EducationRemote

23andMe for environmental exposures

Consumer Health ServicesDigital Health

Building AI therapeutics for physical health conditions like IBS.

Health TechTelehealthDigital Health

The LatAm tech-enabled real estate broker to buy and sell houses.

MarketplaceProptech

On demand fuel delivery service in India

Moving Investment Property Insurance Forward

Real EstateInsurance

Our operations software makes it easier to run--and grow--your cafe

Open-source, self-hosted, session replay tool for developers.

Developer ToolsSaaSOpen Source

We help top engineers from emerging markets get jobs abroad at…

EducationRecruitingEmerging Markets

Building the safety net of the future

Health TechWorkflow AutomationDigital Health

Predictive maintenance models for trains and heavy industry

Artificial Intelligence

Modern online payments for the Philippines

All-In-One Creator Store

AI that remembers your book and helps you finish it

Artificial IntelligenceEntertainmentMedia

SQL editor for teams

Developer ToolsSaaSAnalytics

Best in class company intelligence data.

Machine Learning

K-8 microschools in your neighborhood

Institutional equities broker-dealer

Open-source, design centric software for interacting with blockchains

DeFiCrypto / Web3

Ramen VR is transforming game development with advanced XR + AI tools.

Artificial IntelligenceVirtual RealityGaming

Helping create a smaller, fairer, safer justice system

Civic TechGovTechNonprofit

Vibe code games.

Developer ToolsGenerative AIMachine Learning

The Unified API for Business Financial Data

Developer ToolsFintechB2B

Mobile bank for credit-worthy, new-to-America internationals offering…

Discovering the true signals of disease to power life-changing drugs.

GenomicsTherapeuticsDrug discovery

Turn manual healthcare process into automated workflows

Shiru leverages ML to create proteins to feed the world sustainably.

AI-powered Drug DiscoveryCellular AgricultureMachine Learning

Modern ecommerce for petite women

Machine LearningMarketplaceE-commerce

We write ML software to more accurately select & price insurance risk.

FintechMachine LearningAI

Restaurant Data for the Enterprise

spotLESS Materials

Repellent coatings without PFAS

Hard TechNanotechnologyAdvanced Materials

Stoic helps people feel better and take care of their mental health.

Mental Health TechConsumer Health ServicesConsumer Products

AI customer reputation & performance management for restaurant chains.

Artificial IntelligenceSaaSB2B

We setup Immigrants with a free US Bank Account, Credit Card, SIM…

FintechRemittancesImmigration

Applied Reinforcement Learning Research Laboratory

Artificial IntelligenceData EngineeringAI Assistant

One prompt. One app. One living workspace for teams.

Generative AISaaSB2B

TaxProper helps large Real Estate owners manage their property taxes.

FintechSaaSReal Estate

Together Software

Learn from the experts at your company.

Transform your video monitoring with AI

Artificial IntelligenceDeep LearningComputer Vision

Tranqui Finanzas

Debt Management for Latin America.

We help companies scale marketing campaigns through WhatsApp

MessagingMarketingAutomation

Trella is a platform that connects shippers to carriers. Trella…

MarketplaceLogistics

UpEquity gives homebuyers more certainty and power.

FintechReal Estate

AI recruiter for India's massive blue-collar workforce

The AI negotiation agent to help you save money on SaaS.

SaaSFinanceProcurement

Subscription pharmacy for patients with chronic diseases in LatAm.

Consumer Health ServicesHealth Tech

The Fastest Scientific Computing Platform on the Planet

Cloud Computing

Insurance and risk management tools for startups and growth-stage…

Voyage Biomedical

Using cooling to end brain damage during stroke.

HardwareNeurotechnologyMedical Devices

The Operating System for Edge Computing

Developer ToolsOpen Source

Well Principled

The neural engine for autonomous robots

Artificial IntelligenceHard TechNeurotechnology

Wingman helps inside sales reps with coaching while they're on a call.

Wren is a monthly subscription to offset your carbon footprint.

ConsumerClimate

We build robotic workforces for the food & beverage industry.

Artificial IntelligenceHard TechHardware

Modern payroll for modern work

The design system layer for coding agents

Developer ToolsSaaSDesign Tools

Next-Generation Surgical Navigation and Robotics

Artificial IntelligenceMedical RoboticsAugmented Reality

Payment Platform for LatAm Micro and Small Businesses

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Frequently asked questions

What is the YC S19 batch?

S19 is the Y Combinator batch code for the Summer 2019 cohort. Companies joining a YC batch go through a 3-month program in California and demo their product at the end. techstartupslist.com indexes 131 tech startups from this batch.

How many companies are in YC S19?

Our index currently tracks 131 active tech startups from the YC S19 batch. New companies appear here automatically when our daily scraper finds them; companies that shut down are flagged inactive and hidden from listings.

Which companies graduated from YC S19?

Among the S19 companies indexed here: Hightouch, Prolific, and TRM Labs, and 128 more on this page. Click any profile for category, team size, founding year, and open roles.

Where can I find open jobs at YC S19 startups?

Open roles from indexed S19 companies appear on our /jobs page, aggregated alongside roles from other indexed startups. Each role links directly to the company's official application page.

How often is the YC S19 page updated?

Automated scrapers refresh this page daily. The last index update was 2026-07-17. Inactive companies fall out of the count automatically — we don't keep dead listings live.