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YC W23 243 startups

YC W23 Startups

Every Y Combinator Winter 2023 company we currently index.

Last updated

2026-07-17

Hiring right now 4% 9 of 243

Open roles 180

Most-hired discipline Engineering

The Y Combinator W23 batch (Winter 2023) brought 243 tech startups into our index. This page lists every W23 company we currently track, with logos, taglines, and links straight to their own sites — no paywalled middleman. Notable W23 companies include Resend, Avoca, Finni Health, 1stCollab, and 222. Each profile surfaces team size, founding year, location, and open roles when their careers page is publicly scrapable. The W23 cohort skews toward AI / ML, Dev Tools, and Fintech — common patterns we see in this batch. Recurring tags across these companies: B2B, SaaS, AI, Artificial Intelligence, Generative AI. The directory's filter UI accepts any of them as a query. Geographically, the W23 batch we have leans toward San Francisco, New York City, and New York, 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.

Email for developers

EmailDeveloper InfrastructureSaaS

AI-powered Sales Agent for Service-Based Industries

Empowering Autism Care Providers to Go Independent

Performance-Optimized Influencer Marketing at Scale

Artificial IntelligenceMachine LearningMarketing

the AI social facilitator for offline human to human interactions

Artificial IntelligenceMachine LearningMarketplace

Your AI Partner for SAP Development

Enterprise SoftwareAI

Adventris Pharmaceuticals

Adventris makes cancer vaccines

BiotechHealthcareTherapeutics

Modern finance platform for the Middle East

FintechPaymentsB2B

AI prototyping tool for product managers

Secure Document Agent

Generative AIFinanceWorkflow Automation

Knowledge base maintenance on auto-pilot

AI-Enhanced LearningB2BCustomer Success

Cloud-native stream processing

Developer ToolsSaaSOpen Source

We develop ML that optimizes how batteries in the grid store energy

Energy StorageReinforcement LearningClimate

AI enabled RPA using ChatGPT and computer vision

DocumentsArtificial IntelligenceDeveloper Tools

Hire your first AI Product team.

Artificial IntelligenceFintechB2B

Decision infrastructure for investment firms

Artificial IntelligenceFintechFinance

Scale customer success and onboarding with AI

Artificial IntelligenceGenerative AICustomer Success

Automate outbound with signals

B2BSalesEnterprise

Bluedot is a single payment platform for EV drivers and fleets.

FintechClimateTransportation

Generative AI Photographer for E-Commerce

Artificial IntelligenceGenerative AIE-commerce

The programming language for AI

Artificial IntelligenceDeveloper ToolsGenerative AI

Conversational data analytics for every team

AnalyticsData VisualizationAI

High-performance computing cloud

Developer ToolsSaaSB2B

The Finance Control Centre for African Businesses

FintechSaaSPayments

Your AI product backlog

Generative AISaaSB2B

Realtime Access to Verified Tax Records

FinOpsFintechFinance

Building infrastructure tools to help large companies customize their…

Artificial IntelligenceDeveloper ToolsGenerative AI

Project management software for building infrastructure.

MarketplaceSaaSConstruction

Less screen time, more life.

Finance on a Click

FintechMarketplaceB2B

The #1 Actionable FinOps Platform

Developer ToolsFinOpsSaaS

Create beautiful videos & docs for any product or process in minutes

Generative AISaaSB2B

Turn your ideas into full-stack apps

Artificial IntelligenceDeveloper ToolsAI

Delinquency reduction and automation software for institutional…

FintechReal EstateB2B

Find the best leads with custom intent signals

Artificial IntelligenceGenerative AISaaS

Automating Healthcare Revenue Cycle Management with AI Workforce

Artificial IntelligenceMachine LearningHealthcare

The SAFE for commercial contracts

SaaSOpen SourceSales

Detect every data leak into third-party GenAI tools

AI Agents for corporate finance teams

Artificial IntelligenceFintechSaaS

The operating system for shipping and receiving.

Artificial IntelligenceSaaSB2B

AI Analysts for the Buy-Side

Workflow software for solar & energy contractors ☀️😎

SaaSSolar PowerB2B

AI to increase payment acceptance and reduce fraud for businesses

Artificial IntelligencePaymentsAnalytics

Fully Agentic SWE

Artificial IntelligenceDeveloper ToolsGenerative AI

The Control Plane for Enterprise Agents

Artificial IntelligenceGenerative AICybersecurity

Open source tools & services for reliable AI Agents & AI Applications

AIOpsArtificial IntelligenceDeveloper Tools

Break down AI and cloud costs by feature and customer

FinOpsSaaSEnterprise Software

The smart way to research stocks.

FintechGenerative AISaaS

Dataset Management for AI Trainers

Artificial IntelligenceDeveloper ToolsGenerative AI

Build and host internal tools

Real-time generative AI

Artificial IntelligenceGenerative AIConsumer

Build faster. Waste less time.

Developer ToolsDevOps

Design and build great interfaces

Developer ToolsDesign ToolsAI

Generative AI for protein design

AI-powered Drug DiscoveryDeep LearningGenerative AI

Dill helps construction suppliers automate accounts receivable,…

Double – Coding Copilot

AI coding copilot engineered for performance

Artificial IntelligenceDeveloper ToolsSaaS

Your best friend in production.

Developer ToolsSaaSB2B

Generative AI Worlds

Generative AIComputer VisionAI

The ultimate IP assistant.

Autofix your software dependencies

DevSecOpsB2BSecurity

AI Search Engine for Academic Research

EducationProductivityAI

Offensive security for the teams that are 100x outnumbered

Developer ToolsSecurityAPI

Production-ready document processing

DocumentsDeveloper ToolsB2B

Real-time speech translation

Generative AIAPITelecommunications

Investment research data for AI agents

InvestingData VisualizationAI

AI Co-Pilot for Health Insurers to Authorize Treatment Faster

Health TechB2BHealthcare

Webflow for the Backend

Developer ToolsB2BAPI

Instantly offer SDKs and API Docs

Developer ToolsSaaSB2B

The Personal Shopper in Your Pocket

ConsumerE-commerceFashion

The AI fraud hunter

ComplianceEnterpriseAutomation

Magically simplify accounting and taxes

Financial copilot for institutional investors

Artificial IntelligenceFinanceTrading

AI Wealth Manager

AI Agents for corporate real estate teams

Real EstateB2BHR Tech

The operating system for the car wash industry.

SaaSB2BSubscriptions

Train AI on distributed data

Hire the best AI Sales employees | AI SDR | AI RevOps | AI EA

Generative AIProductivitySales

AI-powered product assistance for modern software teams

SaaSCustomer SuccessCustomer Service

AI-Powered Clinical Decision Support & Ambient Scribing

Artificial IntelligenceSaaSHealth Tech

Create step by step articles with screenshots and videos 10x faster

Artificial IntelligenceProductivitySales Enablement

OpenClaw-style AI coworkers for GTM teams

Artificial IntelligenceVideoMarketing

AI for Government Contractors

Automating Securities Compliance

SaaSB2BCompliance

Rippling for the Construction Industry

AI workforce for property management

SaaSReal EstateB2B

LLM Observability for Developers

AIOpsDeveloper ToolsAnalytics

Create your AI workforce

The open source, fullstack monitoring platform: stop guessing why…

Developer ToolsSaaSB2B

Deal Intelligence and Sales Coaching Platform

B2BAnalyticsSales

AI assisted documentation for PT/OT/SLP

Artificial IntelligenceHealth TechHealthcare

Personal Injury Legal Work - Automated

The home for shared data logic

SaaSB2BAnalytics

Design and explain complex software architecture.

Developer ToolsSaaSB2B

AI-accelerated procedural material and texture tools.

Artificial IntelligenceGenerative AIGaming

Workflow Automation for Construction Finance

AI-Enhanced LearningFintechPayments

Move money programmatically

PaymentsCryptocurrency

Unified platform for secrets, certs, and privileged access management

Developer ToolsSaaSB2B

AI Agent for Cloud Infrastructure

Artificial IntelligenceDeveloper ToolsSaaS

Build AI Agent teammates and automations in code or no-code

Developer ToolsWorkflow AutomationCustomer Support

Creating new protein-based drugs at scale

BiotechNanotechnologyDrug discovery

We help global software companies comply with local tax reporting

FinOpsFintechCompliance

Billing Automation for B2B that actually works.

AI-Enhanced LearningArtificial IntelligenceFintech

The open-source AIOps platform

SaaSB2BOpen Source

AI-powered care for seniors with chronic disease

Consumer Health ServicesTelehealthDigital Health

Crypto On and Off Ramp for Latam

FintechCrypto / Web3Payments

KV Cash, a blockchain where contracts can finally think

Crypto / Web3Open SourceAI

Instantly draft, review, and send complex regulatory notices.

Generative AISaaSInsurance

Laminate — Fintech

Open source LLM engineering platform

Developer ToolsGenerative AIAnalytics

Medical language models to automate healthcare operations

Artificial IntelligenceB2BHealthcare

AI Agents for Enterprises

Developer ToolsGenerative AISaaS

AI browser copilot for teams

B2BProductivityCollaboration

type text, dream video

Artificial IntelligenceVideo

Call every LLM API like it's OpenAI [100+ LLMs]

AIOpsDeveloper ToolsGenerative AI

Dollar banking for people in Latin America

FintechCrypto / Web3

AI for finance, without the black box.

AI-Enhanced LearningArtificial IntelligenceFintech

Enabling birth & postpartum doulas to easily accept insurance.

Health TechDigital HealthHealthcare

Speed up customer implementation with AI

SaaSB2BData Engineering

Go from idea to production with AI.

AI-powered game translation.

ARR Reporting and Forecasting for SaaS companies

Cloud Native SIEM (alternative to Splunk/Elastic)

DevSecOpsAnalyticsOpen Source

AI Agent for your personal finances

Artificial IntelligenceFintechConsumer Finance

AI Agent for Billpay platforms to pay invoices with virtual cards

The AI context platform for private capital. Everything your firm…

FintechSaaSFinance

Metal is an AI-driven operating system for fundraising

B2BInvestingEnterprise Software

AI-based full stack observability platform

B2B-2C real-time account to account payments

FintechSaaSPayments

Accelerate clinical trials with real-time, actionable insights

We teach your immune system to attack and cure cancer

Gene TherapyCell TherapySynthetic Biology

Modern analytics for CPG brands

AI automation for insurance brokerages

DocumentsGenerative AIFinance

A single API for all your integrations

Developer ToolsSaaSOpen Source

AI agents for end-to-end testing

Artificial Intelligence

AI startup investor, No Cap

Artificial IntelligenceInvestingFundraising

Empowering every doctor and every patient to participate in research

Artificial IntelligenceHealth TechB2B

Product design tool that lets everyone design like a designer

The AI-native sales tax solution.

FintechSaaSFinance

Building the first multimodal agents to play and test games.

Odigos Technologies Inc.

Enterprise-Grade OpenTelemetry

AI-powered order taker for restaurant drive-thrus

Generative AIRestaurant Tech

Ohm helps engineering teams accelerate hardware development & testing.

Artificial IntelligenceHardwareData Engineering

Transform any software to multi-cloud SaaS in minutes not years

Developer ToolsSaaSB2B

Frictionless payments via SMS

FintechPaymentsConsumer

AI for corporate tax

Open Source Embedded Product Integrations

Developer ToolsSaaSOpen Source

Usage Metering, AI & API Monetization

AI-powered EHR for independent mental health professionals

Artificial IntelligenceMental Health TechSaaS

The interface for your database

Developer ToolsGenerative AIAnalytics

AI Accountability Partner

Mental Health TechConsumerFitness

Reimagining education with short form video and AI

AI-Enhanced LearningArtificial IntelligenceMarketplace

AI & financial services for real estate in LatAm, starting by rent

SaaSPaymentsFinance

Pando Bioscience

Gen-AI Designed Enzymes for Pharmaceutical Innovation

Generative AISynthetic BiologyBiotech

Risk-free wholesale for retailers across Southeast Asia

FintechMarketplaceB2B

Sales Agents with 100+ data sources to close more deals

Generative AISalesAI

Developing long-lasting drug formulations 50% faster

Machine LearningRoboticsMicrofluidics

Stripe for Credit - Trusted Credit Compliance Partner

Artificial IntelligenceFintechSaaS

Pierre is a new, opinionated, git platform.

AI-Enhanced LearningDeveloper ToolsB2B

AI-powered document automation: collect, review, extract, and sync.

Github for Construction

Our mission is to make Voice AI accessible and useful to all.

Generative AIAPI

AI RCM assistant that handles any insurance task on payer portals for…

SaaSHealth TechB2B

App that tells you which credit cards to get and when

Restaurant software that actually works

SaaSPaymentsB2B

Deploy Machine Learning Models with One Command

AIOpsArtificial IntelligenceMachine Learning

Build and host internal tools

B2B Marketplace for Steel Raw Materials

MarketplaceB2BManufacturing

Plaid for Commercial Real Estate

Developer ToolsSaaSB2B

The only customer support platform built for B2B.

B2BCustomer SuccessCustomer Support

Building persistent, high-performance infrastructure in the sky

DronesSatellitesAerospace

DeFi for Everyone

AI-native tax platform to save $1T+ for Americans

FintechConsumer

The operating system for building mission-critical enterprise apps.

Artificial IntelligenceDeveloper ToolsOpen Source

Models and infra for coding agents

Employee security done for you.

AI workers for debt settlement

Generative AISaaSFinance

Automating nutrition tracking.

Artificial IntelligenceHard TechComputer Vision

B2B lead routing made simple

Rivet Actors are the primitive for stateful workloads

B2BOpen SourceInfrastructure

Automate data-driven slide decks and documents with AI

Artificial IntelligenceProductivityAnalytics

Culture-defining commercials

VideoAdvertisingAI

Neobank for e-commerce businesses

Managed marketplace for solar in Latam

Solar PowerClimateRenewable Energy

Your self-generating, self-maintaining code knowledge base.

Developer ToolsSaaSB2B

AI Servicing for Auto Lenders

FintechGenerative AIB2B

The leading AI workforce for the trades.

Generative AIB2BSales Enablement

Shopify for pharmacies in Europe

MarketplaceSaaSConsumer Health Services

The API for Diagnostic Test Analysis (COVID-19, FLU, RSV, STD,…

Machine LearningComputer VisionHealth Tech

Scout is an AI news aggregator that turns your role, industry, and…

Shekel Mobility

B2B marketplace for Auto Dealers in Africa

FintechB2BNeobank

One place for all your queries, directly on your SQL editor

Generative AISaaSB2B

Read romance comics.

Artificial IntelligenceConsumerEntertainment

Phone AI that Captures Every Dealership Revenue Opportunity

Generative AIB2BAI

Cloud warehousing & supply chain platform in MENA

Warehouse Management TechB2BLogistics

PaaS-like experience with the power of Kubernetes, on your cloud

Developer ToolsSaaSB2B

Unifying how the optical industry does business.

SaaSPaymentsHealth Tech

Maximize profits with AI-powered rebate management.

The Enterprise AI Transformation Platform

EnterpriseAutomationAI

Tool and platform to create and sell webcomics

EntertainmentMediaCreator Economy

Stralis Aircraft

Emission free hydrogen electric aircraft

Hard TechHydrogen EnergyAirplanes

Salesforce for Cloud marketplaces on AWS, Azure, GCP

MarketplaceSaaSB2B

Programmable API gateway that makes APIs cacheable

Developer ToolsAPI

AI-Powered Super Mentor for Test Prep

AI-Enhanced LearningArtificial IntelligenceEducation

Social listening for the video era

Generative AISaaSB2B

AI Teammates for Data Tasks

DocumentsSaaSData Engineering

Tagsafe — B2B

SaaSB2BAnalytics

Fast, Transparent Patient Experiences

SaaSWorkflow AutomationHealthcare

Run AI pipelines 10x faster

The world's simplest Bitcoin self-custody solution

FintechCrypto / Web3Consumer

Lifeline for your business

Artificial IntelligenceFintechB2B

Know what your LLM is doing — and why it’s failing

Developer ToolsGenerative AISaaS

Plaid for supply chain logistics

SaaSB2BLogistics

Build and deploy fully‑managed AI agents and workflows

Developer ToolsSaaSB2B

Rent verification API for landlords and lenders

FintechB2BProptech

AI-Powered Accounting

FintechGenerative AISaaS

AI-native storytelling studio.

SaaSConsumerProductivity

AI teammates for everyone else 🤖

Artificial IntelligenceProductivityOpen Source

Language learning with a conversational AI Tutor

Single source of truth for your clinic's finances and supply chain.

Health TechFinanceB2B

Scheduling software for digital health clinics to do more with less.

AI for Human Writing

Artificial IntelligenceSaaSConsumer

AI Agents for Fraud Review and Investigations

Artificial IntelligenceComplianceCybersecurity

Advertising for the new internet

Generative AISaaSB2B

Platform to automate manual back-office work

Artificial IntelligenceGenerative AIReinforcement Learning

Vendah is building a Faire-style marketplace for LATAM’s +50M…

All-in-One Software for the $1T Grocery Industry

Artificial IntelligenceGroceryPayments

Network Intelligence for Investors

FintechGenerative AISaaS

AI-first user research platform

Artificial IntelligenceSaaSB2B

Agentic integrations & automations for enterprise

A new way to create landing pages that is video-native.

Transforming how health systems optimize labor

SaaSB2BHealthcare

Open source Voice AI

Developer ToolsGenerative AIOpen Source

Automation platform for logistics

Neobank for global remote workers

FintechInvestingNeobank

AI-native Employee Management Platform for High-Growth Companies

B2BHR TechPayroll

B2B payments platform for emerging markets.

FintechPaymentsB2B

Automating root cause analysis with generative AI

Developer ToolsGenerative AISaaS

The AI Support Agent for Ecommerce

Artificial IntelligenceCustomer SupportAI

Account abstraction wallets as a service

AI Workers for Warranty

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Frequently asked questions

What is the YC W23 batch?

W23 is the Y Combinator batch code for the Winter 2023 cohort. Companies joining a YC batch go through a 3-month program in California and demo their product at the end. techstartupslist.com indexes 243 tech startups from this batch.

How many companies are in YC W23?

Our index currently tracks 243 active tech startups from the YC W23 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 W23?

Among the W23 companies indexed here: Resend, Avoca, and Finni Health, and 240 more on this page. Click any profile for category, team size, founding year, and open roles.

Where can I find open jobs at YC W23 startups?

Open roles from indexed W23 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 W23 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.