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YC W18 110 startups

YC W18 Startups

Every Y Combinator Winter 2018 company we currently index.

Last updated

2026-07-17

Hiring right now 3% 3 of 110

Open roles 221

Most-hired discipline Engineering

The Y Combinator W18 batch (Winter 2018) brought 110 tech startups into our index. This page lists every W18 company we currently track, with logos, taglines, and links straight to their own sites — no paywalled middleman. Notable W18 companies include Replit, Vanta, Acely, Aerones, and AesculaTech. Each profile surfaces team size, founding year, location, and open roles when their careers page is publicly scrapable. The W18 cohort skews toward Healthcare, Consumer, and Dev Tools — common patterns we see in this batch. Recurring tags across these companies: SaaS, Fintech, B2B, Artificial Intelligence, Consumer. The directory's filter UI accepts any of them as a query. Geographically, the W18 batch we have leans toward San Francisco, New York, and Toronto, with the rest spread across remote-first teams and other hubs. 2 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.

Collaborative in-browser IDE

Developer ToolsCollaboration

Vanta—the proven leader in automated compliance helping startups…

B2BComplianceSecurity

Every student's AI coach for college readiness

EducationeLearningConsumer

Robotics for wind turbine maintenance.

RoboticsDronesClimate

Responsive materials, better lives.

Medical DevicesConsumer Products

We make AI technology for Robotic and AR Surgeries

Augmented RealityRobotic SurgeryMedical Devices

Anjuna enabled organizations to trust any infrastructure

Cloud Workload ProtectionSecurity

Replacing orthodontic braces with our clear aligner and software

RoboticsHealth TechMedical Devices

All-in-one Finance OS for businesses

FintechSaaSPayments

Create remarkable client experiences

B2BE-commerceAI

Avro Life Science

Skin patches for generic drug delivery.

BiotechDrug Delivery

Great tasting produce, farmed around the corner

Food Service Robots & MachinesGroceryVertical Farming

Bear Flag Robotics

Autonomous driving technology for farm tractors.

RoboticsAgriculture

Biobot Analytics

Population health analytics powered by wastewater.

Health TechAnalytics

'Figma/Canva for scientists’

SaaSCollaborationDesign Tools

Blueberry Pediatrics

24/7 pediatric clinic in every family's living room

Consumer Health ServicesHealth TechTelehealth

Agile commission software to design, deploy & adapt commission plans.

Causal Analytics for Growth Teams

CodeStream is a Developer Collaboration Platform designed to…

Developer ToolsSaaSCollaboration

Flat-fee patent & trademark counsel with top firm results

Artificial IntelligenceGovTechB2B

The gold standard in cryptocurrency portfolio tracking and taxes

FintechSaaSCrypto / Web3

Culture Biosciences

We grow cells for biotech companies.

Cellular AgricultureBiotech

Manage data in Snowflake, BigQuery, and Redshift

Dear Brightly makes personalized prescription skincare products,…

Build mobile apps visually. Source-code included.

Developer ToolsDesign Tools

Edwin is virtual English tutor - an AI-powered service for learning…

AI-Enhanced LearningEducationMachine Learning

Digital financial services for students in Southeast Asia

EducationFintech

Evolve (makers of Podcast App & Rest)

Rest is an AI sleep coach that helps you fix your sleep for good,…

Sleep TechConsumerDigital Health

Better health insurance for mid-size companies

FintechHealthcareHealth Insurance

FidoCure® is the leader in Precision Medicine for Canine Oncology.

Mexico's digital wallet

FintechConsumerLatin America

Bookkeeping, tax, & tax credits on autopilot for 1,000+ startups

Artificial IntelligenceFintechSaaS

Personalized Performance Nutrition

ConsumerE-commerce

Glimpse eliminates ineffective spending in schools.

EducationAnalytics

Unified, enterprise messaging platform for leading brands of the world

SaaSB2BMessaging

Making financial services simple, transparent and delightful.

Helloverify is a background screening platform (Checkr for India).

Hunter2 trains engineering teams in application security through…

Developer ToolsEducationCybersecurity

Jasper is a leader in creating content using Artificial Intelligence

Artificial IntelligenceGenerative AIAI

Turn your data into a deployed computer vision model

Deep LearningIndoor MappingMachine Learning

Helping software developers find teams that share their values.

RecruitingCareers

Automating document-based workflows

DocumentsSaaSLegal

The online company that gets everyone offline

MarketplaceSports Tech

Look After My Bills

Personal fintech - we optimise your bills, every year, automatically.

Lucy Goods, Inc

Lucy’s mission is to reduce tobacco-related harm to zero. We provide…

3D Printed FoodsBiotechE-commerce

Hair care products for curly hair.

Computational antibody design

AI-powered Drug DiscoveryDeep LearningTherapeutics

Mayhem is the easiest way to play with your gaming community.

We manage patient instructions for hospitals

HealthcareHealthcare IT

Opentable for the world's top restaurants; we help them increase…

Digitize and Automate Complex Care Workflows

Health TechDigital HealthAI

Mind Emulation Foundation

Mind Emulation Foundation — Healthcare

A mental health benefits platform for employers.

Mental Health TechHealth Tech

Mobile app for creating pro-quality social media videos

ConsumerB2BDesign Tools

A credit bureau for the renting generation.

Artificial IntelligenceFintechReal Estate

Building a way to preserve long-term memories.

Neurotechnology

Universal API for HR & Payroll

Developer ToolsB2B

Modern insurance brokerage.

FintechInsurance

NEXGENT — Education

Your AI partner for North America truckload freight

Artificial IntelligenceLogistics

iPhone-based driver monitoring for commercial fleets.

Autonomous TruckingHard TechMachine Learning

Contact center AI platform.

SaaSCustomer ServiceAI

Dental Insurance API

SaaSHealthcareDental

This isn't just a marketplace; we're shaping the future of digital…

MarketplaceCrypto / Web3NFT

Orangewood Labs

Orangewood Labs makes worlds most affordable and easiest AI robot arms

Artificial IntelligenceGenerative AIHardware

The world's first digital clinic for substance use management

Persephone Biosciences

We are using the gut microbiome to end cancer.

AI-powered Drug DiscoveryCOVID-19

Players' Lounge

Win money betting on yourself playing AAA video games

High-performance gloves for VR and AR

AI to curate your baby photos

Artificial Intelligence

Better payment systems for governments and the communities they serve.

Artificial IntelligenceFintechGovTech

PROVEN is using AI, data and personalization to disrupt CPG

Artificial IntelligenceMachine LearningConsumer

Psychotherapy through autonomous and personalized VR-sessions.

Mental Health TechVR Health

We're crowdsourced Gartner so IT executives can learn directly from…

MarketplaceEnterprise

Security auditing for Web3

Crypto / Web3Security

The people, management, and culture operating system for your startup.

Human ResourcesCulture

Automating payroll for Latin America.

FintechSaaSPayroll

Health insurance for remote teams

Consumer Health ServicesInsuranceRemote Work

Wearables and AI to predict and prevent sepsis outside the hospital

Deep LearningHealth TechMedical Devices

Peer-to-peer mentorships through income-share agreements.

Artificial IntelligenceEducationIncome Share Agreements

Shogun empowers brands to create exceptional ecommerce experience.

SaaSB2BE-commerce

No code enterprise SaaS for financial control automation.

Sixfold Bioscience

Delivering RNA therapies.

Gene TherapyNanomedicineDrug Delivery

The self-maintaining knowledge base

DocumentsSaaSCollaboration

Order ahead at restaurants and get rewards with friends.

MarketplaceE-commerce

Sourcify helps brands manufacture products in Asia.

ManufacturingSupply Chain

Making Anime Real

Artificial IntelligenceDeep LearningGenerative AI

Sqreen is the application security platform for the modern enterprise

DevSecOpsB2BSecurity

Squad is an app for live communities to have shared experiences…

Powering a better future for textiles.

Hard TechSmart ClothingConsumer

A place for independent writing.

Super is the first and leading Indonesian social commerce platform

MarketplaceConsumerE-commerce

VR space of immersive utilities

Virtual Reality

Swayable predicts consumer opinion and the impact of content

Machine Learning

Meet other creators. Get daily matches. Find brand deals.

EntertainmentCommunityE-commerce

Translating for Humanity

tEQuitable's mission is to create work culture that works for everyone

B2BHR TechDiversity & Inclusion

Tilt (f.k.a. Delphia)

Tilt lets anyone build an index out of any content on the web.

FintechMachine LearningAI

MarketplaceSaaSB2B

Tradewind BioScience

Tradewind translates scientific insight into innovative ways of…

Embedded banking software platform and marketplace

Banking as a ServiceFintechB2B

Tax filing automation for individuals in Latam.

Design and build any kind of website. On your iPhone or iPad.

Vena Medical is providing physicians with the world's smallest camera…

HardwareMedical Devices

AI-powered identity verification solution for fraud prevention.

Weekend (fmr. Volley)

AI games and entertainment on TV

Artificial IntelligenceEntertainmentGaming

Analytics to improve how teams work and collaborate

Human ResourcesProductivity

We make it easy for startups to hire engineers.

MarketplaceHuman Resources

ZBiotics makes genetically engineered probiotics.

Synthetic BiologyHealth & WellnessFood & Beverage

Recreating social networks for brands.

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Frequently asked questions

What is the YC W18 batch?

W18 is the Y Combinator batch code for the Winter 2018 cohort. Companies joining a YC batch go through a 3-month program in California and demo their product at the end. techstartupslist.com indexes 110 tech startups from this batch.

How many companies are in YC W18?

Our index currently tracks 110 active tech startups from the YC W18 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 W18?

Among the W18 companies indexed here: Replit, Vanta, and Acely, and 107 more on this page. Click any profile for category, team size, founding year, and open roles.

Where can I find open jobs at YC W18 startups?

Open roles from indexed W18 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 W18 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.