YC 5255 startups

All from YC

Every YC-sourced startup currently in the index.

Last updated

2026-09-02

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Supabase

Build in a weekend. Scale to millions.

Developer ToolsOpen SourceBig Data

The issue tracker built for high-performance teams.

SaaSDev ToolsProject Management

Build internal tools fast.

The single platform to analyze, test, observe, and deploy new features

Developer ToolsB2BOpen Source

Authentication infrastructure for the modern web.

AuthSaaSDeveloper Infrastructure

EmailDeveloper InfrastructureSaaS

Speed up non-coding tasks for engineering teams

Developer ToolsProductivity

The Revenue Excellence Platform

Applied research lab curating data solutions for foundation model…

Artificial IntelligenceB2BData Labeling

Book accommodations around the world.

A developer-friendly and enterprise-grade search API.

Developer ToolsSaaSB2B

API-first stock and crypto brokerage platform

Developer ToolsFintechAPI

Digital Analytics Platform

Developer ToolsB2BAnalytics

All-in-one recruiting platform that empowers hiring excellence in…

Human ResourcesB2BRecruiting

The best way to build Voice AI apps

Artificial IntelligenceDeveloper ToolsSpeech Recognition

AI-powered Sales Agent for Service-Based Industries

Unlocking the power of biotech with modern software for modern science

The genetic testing platform detecting and measuring disease.

Powers OTT online video providers with video developer tools.

Business accounts, corporate cards, and spend management software.

The world's first private mass transit service providing a commuting…

People infrastructure for the future of work

Artificial IntelligenceComplianceHR Tech

CRM and sales automation tools for startups and SMBs

Buy, sell, and manage cryptocurrencies.

Confident decisions in days with AI-led interviews.

SaaSFeedbackMarket Research

Construction & industrial logistics platform.

ConstructionB2BDelivery

Building foundational AI for speech transcription and understanding.

AI-Enhanced LearningAPIAI

Software development platform.

Open SourceDevOpsEnterprise Software

Backup and share files in the cloud.

Web search rebuilt for LLMs

Developer ToolsSearchAI

The global online platform empowering independent retail.

Empowering Autism Care Providers to Go Independent

The leader in automated data movement

Platform for global logistics.

SaaSLogisticsSupply Chain

AI + Robotics for the Built World

Artificial IntelligenceRoboticsEnergy

The OS for Embedded Telecom

A complete DevOps platform delivered as a single application.

Developer ToolsDevSecOpsOpen Source

We’re building the world’s bank payment network.

Provides growing businesses with everything to take care of their team

B2BPayrollHealth Insurance

Change the world to value skills over pedigree

Developer ToolsRecruiting

The leading Composable CDP and AI Decisioning platform

MarketingEnterprise SoftwareAI

AI-Powered HRIS for high performing teams

SaaSHuman ResourcesB2B

Revenue Activation Platform

AI-Enhanced LearningB2BSales

Marketplace for grocery delivery and pickup

GroceryDeliveryE-commerce

A flexible work app that connects businesses with hourly workers.

Source better parts by partnering directly with vetted manufacturers

B2BManufacturingSupply Chain

AI-powered talent sourcing for recruiters

Generative AIB2BRecruiting

Open-source, serverless vectordb for production-scale generative AI

AIOpsMachine LearningOpen Source

Open Jobs 12

Team 35

Founded 2022

Showing 48 of 5,255 Browse the full directory →

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1 of 1 similar company is hiring right now · most common: Engineering

Inngest

Reliable, zero-infrastructure background jobs.

InfrastructureServerlessWorkflows

Open Jobs 1

Team 1–20

Founded 2021

YC W22 startupsAll cohort members Startups in San Francisco2567 indexed AI / ML startupsFull category listing "B2B" startups1090 indexed

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