YC-Backed Companies
5,949 Y Combinator portfolio companies tracked in the Altss database. For each company, Altss surfaces which family offices have co-invested alongside YC.
Summer 2023
(99 companies)
Minded
Cursor for AI Agents

Mocha
Build and publish web apps in minutes. No coding required.

Morph
Subagents and tools that improve coding agents

Movley
Your e-commerce brand's product quality control department.

Nanograb
Deliver genes to any cell with AI

Nectar
Manage energy cost & usage with AI for facility & sustainability teams

Nowadays
AI co-pilot for corporate retreat and event planning

Numen
Engineering a future without cancer deaths.

Obento Health
CRM Co-Pilot for Medtech Sales

Ohmic Biosciences
Genetically engineering plants for disease resistance.

Olio Labs
Combination therapeutics for the world's toughest diseases

Onward
Intelligent meeting automation for ambitious teams.

OpenPipe
Turn expensive prompts into cheap fine-tuned models
enterprise infrastructure · United States

OpenTools
The API for LLM tool use

Opensteer
Specialized agents for real work

Ora AI
Med school can be simpler

Orbio Earth
Tracking methane emissions with satellites

Osium AI
Speed up materials innovation with Artificial Intelligence
technology · France

Outset
AI-powered user interviews

ParadeDB
Simple, Elastic-quality search for Postgres
technology · United States

Parea
Test, evaluate & observe your LLM applications

PeerDB
Fast, native ETL for Postgres 🐘 🚀

Pincites
Close deals faster with AI for contract negotiation

Pointhound
Earn and redeem credit card points for free flights

PropRise
The AI platform for CRE investment teams

Prosper
AI Phone Agents for Healthcare Operations

Pure
Marketplace for Rare Coins & Precious Metals

Quill Bills
AI-Powered Medical Billing

Rankai
AI-Native Agency for Organic Growth (SEO & GEO)

Read Bean
Learn language with real-world content, at your level

Readily
AI Compliance Platform for Healthcare Organizations

RecipeUI
The open source Postman alternative.

Remy
Making it simpler for medical clinics to work with insurance

Repaint
Build a website by chatting with AI

Revamp
AI-Powered Customer Segmentation for eCommerce

Reworkd
The simplest way to extract web data at scale

Rimward
Low-false-positive intrusion detection for remote outdoor sites

Roame
Flight search engine using credit card points and miles

Rocketeer
Claude Code for GTM

Roundtable
Proof of Human - invisible human verification

SID
AI research lab for retrieval

Saatvy
Root cause help for chronic conditions

SafetyKit
AI agents for risk, compliance, and safety
enterprise applications · United States

Santé
All-in-one POS for liquor stores

Sendblue
iMessage for Sales

Serra
Your 24/7 AI Recruiter

Shadeform
The GPU Cloud Marketplace

Shasta Health
AI calling & browser agents for healthcare

Sidenote
Meeting follow-up, automated

Silimate
The copilot for chip designers

Simbie AI
We get patients to their next appointment

Skyvern
Open Source AI Agent to automate browser workflows via an API
technology · United States

Slicker
Recover payment failures and maximize subscription Revenue

Smobi
Send texts your customers actually want over RCS
technology · United States

Sohar Health
AI-powered insurance verification to boost patient conversion.
healthcare · United States

Sola
Copilot for Robotic Process Automation

Solve Intelligence
AI patent drafting, prosecution, litigation and more for legal teams.

Spine AI
Manage a swarm of AI agents to get real work done

Stellar Sleep
We help people with chronic insomnia sleep better, using psychology.
healthcare · United States

Strada
AI agents that run insurance operations

Structured Labs
The publishing layer for the agentic internet

Studdy
An AI math tutor for every student

Subsets
AI-driven Retention Automation for subscription media businesses.

Surface Labs
Building the AI-powered marketing ops platform that turns website…

Sweep
The best AI coding assistant for JetBrains

Sweetspot
AI for Government Contracting.

Synch
Supercharging Sales

SyntheticFi
Low cost securities-backed lending for financial advisors and HNWI

Talc
Event extraction for Medical Researchers

Tempo
Visual Editor for React, powered by AI

Terminal
Plaid for Telematics Data in Commercial Trucking
real estate · Georgia

Terracotta AI
AI-powered Infrastructure as Code PR reviews

Tiptap
The open-source document editor for humans and AI agents.
fintech · Canada

Trainy
Infrastructure for managing GPU clusters for training/serving.

Trayd
A construction payroll platform designed for same-day pay.

Tremor
The UI toolkit for Dashboards

Twenty
Open Source CRM
technology · France

Twine
AI text message receptionist for SMBs

Unhaze
The right leads at the right time for B2B sales

Upstream
The first inbox designed for humans and agents

Vango AI
Development platform that makes it 10x easier to improve visual models

VaultPay
Digital banking platform for the 30 million smartphone users in DRC.

VectorShift
No-Code Generative AI Automations Platform

Venta AI
The compliant AI colleague for sales teams in Europe
technology · Germany

VetRec
AI Scribe for veterinarians. Saving time and improving patient care.

Vizly
Data to insights in seconds

Watto AI
AI-powered McKinsey-quality reports in seconds

Wattson Health
AI Voice and SMS Agents for Healthcare

Webhound
Long-horizon research agents

Xeol
Close your outdated dependency attack vector

Y/n
Play a fun story

Zelos Cloud
The Data Platform for Mission‑Critical Systems

dili
Automating PWA Compliance and Diligence

kapa.ai
The fastest way to build AI assistants on technical content
enterprise applications · Denmark

maintouch
Scale SEO and AI SEO from one platform.

refine
Open-source Retool for enterprise

sizeless
Instant 3D Digital Twins for Smarter Real Estate.
technology · France

sudocode
orchestrate your coding agents with sudocode

truemetrics
We show couriers where to park and enter a building.
Summer 2022
(101 companies)
100x
Create, Share, and Monetize AI Agents

ALT TEX
Biodegradable and carbon neutral textiles, engineered from food waste.

AccessOwl
Managing your Employees' Access to SaaS

Activepieces
Open-source, AI-first and no-code business automation tool

AiPrise
AI-powered Global Compliance Platform

Airhart Aeronautics
Airplanes anyone can fly

Airtrain AI
No-code data curation for LLM fine-tuning and evaluation.

Albiware Inc.
B2B SaaS for insurance damage repair contractors.

Aldara
HOA manager with automated operations

AlgoTest
Ecosystem for options trading in India

Alma
Gamified mobile banking app where people can win $1M every Wednesday

Almond
We make it easy to get great ObGyn care in-person and over telehealth

Alterya
Protecting Humans from Scams

Anchor
Embedded finance platform for African businesses

AnythingLLM
Building the definitive all-in-one on-device AI productivity tool

Apply Design
Helping realtors showcase the full potential of their properties

Aragorn AI
Operating system for HR in the AI era

Argovox
Voice AI agents for patient billing and collections

Array Labs
We're building satellites to create a real-time 3D map of the world.

Artemis Search
A search technology that actually finds what you’re looking for.

Atlas
E-Sign API for AI Agents

Aurelian
Automating non-emergency calls for 911 centers

AviaryAI
Outbound AI voice agents for the financial services industry

Avina
GTM signals engine for sales teams. Automate warm outbound with AI.

Axle
AI-native clearinghouse for insurance

Ballerine
Agentic Intelligence Layer for Merchant Risk Decisions

Banabo
ML Marketing Infrastructure

BiggerPicture
Scheduling automation platform between trucking and warehousing

Birch Biosciences
We recycle plastic using engineered enzymes

Bitstack
All things money, with better money
fintech · France

Blee
Smart, fast, and collaborative compliance reviews

Blitz
Lovable for non-tech users: Build no-code internal and customer apps

Blockscope
Palantir for Web3

BlueHill Payments
Client management, communication, and projects in one platform.

Boostly
Premier growth platform for restaurants

Boton
Accounting software with an AI agent

Boundo
Using generative AI to 10x outbound sales, all on autopilot!

BricksAI
Streamlining LLM application management for enterprises

Bridgecard
Card issuer for Africa

CAPSULE
Buy anything you find on social media

Cambio
AI-native commercial real estate operations

Capix
AI-powered private equity intelligence.

Cashboard
Inventing the solo CFO.

Cerrion
Video AI to automatically detect and respond to production line…
technology

Champ
AI SDR

Chariot
A payment network connecting nonprofits to the $326B in DAFs
consumer

Chordio
Claude Code design workspace built for product teams

Chowdeck
On-demand food delivery for Africa
consumer · Nigeria

Ciro
GTM AI that books you 5-8 meetings/week

Cisterna Biologics
High quality mRNA for therapeutic application

Clearline
AI operating system for car dealerships to capture missed revenue

Clinikally
India's Telemedicine Platform & Online Pharmacy for Dermatology Care
healthcare · United States

Cobbery
Enabling discovery to be done entirely in-house

CodeCanary
Find and fix bugs from session replays with AI

CodeCrafters
Programming courses for experienced engineers

CompUp
Building a compensation graph to help companies optimise people spend
hrtech · India

Cone
Work operating system for professional service businesses

Coris
AI risk and ops platform for Payment Processors, Banks, SaaS…

Coupl
Banking designed for Indian couples.

Coverage Cat
Consumer Optimized Insurance

Craze
Actually do things with the right AI models, apps and agents for you

CustomerOS
Uncover high-fit leads already silently engaging with your brand

Delegasi
Automated accounting service for small businesses in Indonesia

Delfino AI
Generative AI for administrative automation in healthcare

Denormalized
serverless platform for real-time data

Dev Tools AI
AI powered web & mobile automation

Devyce
The global mobile network for business.
telecom · United Kingdom

Dialect
AI copilot for forms, questionnaires & RFX

Disclo
Health disclosure and accommodation management platform

Dittofeed
Open-source customer engagement & messaging automation

Diversion
A scalable, cloud-native Perforce and Git alternative

Dr. Treat
“One Medical for pets.”
healthcare · United States

Drahim 💰
WealthFront for Saudi & Middle East

Drip
Shop and pay in installments anywhere

ECSA
AI Agent runs the entire international trade operation

Ekho
Shopify for vehicles
fintech · United States

Elessar
AI-powered engineering productivity tools

Emerge Career
All-in-one re-entry & workforce development training platform

Entvin

EthosX
The protocol for derivatives on blockchains

Eugit Therapeutics
Enabling Tissue Targeting of Therapies

Evoly
Smart electric & water meters as a service

Express Building
Financing Southeast Asia's ~$1 trillion housing backlog

Feather
Voice AI
fintech · Germany

Fetii
Fetii is an AI-driven mobility platform

Findly
Co-pilot for Business Intelligence

Fini
Fini | Automate 80% of enterprise support with AI agents

Firecrawl
The API to search, scrape, and interact with the web at scale. 🔥
technology · United States

Flair Labs
The world's first digital concierge for real estate and lending

FlatX
AI-Powered Rental Platform for Urban Renters

FlyCode
Recover failed subscription payments to increase retention and LTV

FoodCourt
Virtual Restaurants & Stores for Africa

Grai
Open source version control for metadata

Guardian Bio
Dendritic cell-based platform for cancer therapy

Gullak Money
Gullak automates savings & invests these in gold
fintech · India

HOMLI
Sell your home without brokers

Hedgehog
Building robotic mushroom farms

Hype
Trade memecoins

HyperDX
Open-source, dev-friendly observability.

Illuminant Surgical
A new way of seeing inside the human body.

InVision Medical Technology
AI Diagnosis of Heart Disease
Which family offices back YC companies?
Altss tracks family office deal activity across the YC portfolio. Request access to see investor-level data, round participation, and LP mandates.