Y Combinator companies

The Y Combinator portfolio as the radar sees it: synced daily, classified into clusters, checked for life and movement. 6,197 companies.

CompanyClusterProgramStatusLast signal
Briefer

The collaborative data platform.

Developer toolsinteractive data apps and visualizationY CombinatorS23Inactivechecked 2026-08-17
Chatter

Dead simple LLM testing and iteration

Developer toolsLLM testing and prompt iterationY CombinatorS23Acquiredchecked 2026-08-23
CodeStoryAI

Aide is an AI-native , privacy-first IDE built on top of VSCode

Developer toolsAI-native IDE with agent coding assistanceY CombinatorS23Inactivechecked 2026-08-23
ContinueAI

Pioneering open-source coding agent

Developer toolsopen-source coding agentY CombinatorS23Acquiredchecked 2026-08-23
CorgeaAI

Corgea finds, and fixes insecure code and packages autonomously.

Developer toolsautonomous code security and remediationY CombinatorS23Activechecked 2026-08-23
DataShare

Embed charts, dashboards and exports in your app

Developer toolsembedded analytics and dashboardsY CombinatorS23Site unreachablechecked 2026-08-17
Dioxus Labs

Web, Desktop, and Mobile apps with one codebase in Rust

Developer toolsFull-stack app framework for RustY CombinatorS23Acquiredchecked 2026-08-23
GladeAI

Build games at the speed of thought

Developer toolsAI game development toolkitY CombinatorS23Inactivechecked 2026-08-17
Hegel AI

Open source tools for developing generative AI applications

Developer toolsLLM prompt evaluation and testingY CombinatorS23Site unreachablechecked 2026-08-17
Kino AIAI

Kino is an AI media manager and video editor for humans and agents.

Developer toolsAI-native video editing platformY CombinatorS23Activechecked 2026-08-23
Magic LoopsAI

Program computers with natural language

Developer toolsAI-powered workflow automation platformY CombinatorS23Activechecked 2026-08-23
MetoroAI

AI SRE For Teams on Kubernetes

Developer toolsAI-powered Kubernetes observability and remediationY CombinatorS23Activechecked 2026-08-23
MidrenderAI

Turn product features into launch videos

Developer toolsAI-powered video generation for product demosY CombinatorS23Activechecked 2026-08-23
MochaAI

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

Developer toolsAI-powered no-code app builderY CombinatorS23Acquiredchecked 2026-08-23
Parea

Test, evaluate & observe your LLM applications

Developer toolsLLM testing and monitoring platformY CombinatorS23Activechecked 2026-08-23
RecipeUI

The open source Postman alternative.

Developer toolsAPI testing and debuggingY CombinatorS23Inactivechecked 2026-08-17
refine

Open-source Retool for enterprise

Developer toolsReact framework for enterprise appsY CombinatorS23Activechecked 2026-08-23
Structured LabsAI

The publishing layer for the agentic internet

Developer toolsAI-assisted technical documentation platformY CombinatorS23Inactivechecked 2026-08-23
SweepAI

The best AI coding assistant for JetBrains

Developer toolsAI coding assistant for JetBrains IDEsY CombinatorS23Activechecked 2026-08-23
Tempo

Visual Editor for React, powered by AI

Developer toolsAI-powered visual React editorY CombinatorS23Activechecked 2026-08-23
Terracotta AIAI

AI-powered Infrastructure as Code PR reviews

Developer toolsAI code review for Infrastructure as CodeY CombinatorS23Activechecked 2026-08-23
Tiptap

The open-source document editor for humans and AI agents.

Developer toolsOpen-source collaborative document editor frameworkY CombinatorS23Activechecked 2026-08-23
Tremor

The UI toolkit for Dashboards

Developer toolsDashboard UI component libraryY CombinatorS23Acquiredchecked 2026-08-23
Vango AIAI

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

Developer toolsVisual model evaluation platformY CombinatorS23Inactivechecked 2026-08-17
AlloyAI

AI prototyping tool for product managers

Developer toolsAI prototyping and design-to-codeY CombinatorW23Activechecked 2026-08-23
BoundaryAI

The programming language for AI

Developer toolsAI programming language for agentsY CombinatorW23Activechecked 2026-08-23
BuildJet

High-performance computing cloud

Developer toolsCI/CD acceleration infrastructureY CombinatorW23Activechecked 2026-08-23
co.devAI

Turn your ideas into full-stack apps

Developer toolsAI full-stack app generationY CombinatorW23Activechecked 2026-08-23
CodeParrot AIAI

Helps Developers build stunning UI Lightning Fast ⚡️

Developer toolsAI design-to-code conversionY CombinatorW23Inactivechecked 2026-08-24
CosineAI

Fully Agentic SWE

Developer toolsagentic software engineeringY CombinatorW23Activechecked 2026-08-23
Defer

Zero infrastructure background processing platform.

Developer toolsbackground job processing platformY CombinatorW23Inactivechecked 2026-08-17
Depot

Build faster. Waste less time.

Developer toolsDocker build acceleration and CI/CDY CombinatorW23Activechecked 2026-08-23
Designbase

Design and build great interfaces

Developer toolsAI-powered interface design toolY CombinatorW23Activechecked 2026-08-23
Double – Coding CopilotAI

AI coding copilot engineered for performance

Developer toolsAI coding copilot for developersY CombinatorW23Activechecked 2026-08-23
ExtendAI

Production-ready document processing

Developer toolsAI document processing infrastructureY CombinatorW23Activechecked 2026-08-23
Fastgen

Webflow for the Backend

Developer toolsLow-code API and workflow builderY CombinatorW23Site unreachablechecked 2026-08-17
Fern

Instantly offer SDKs and API Docs

Developer toolsSDK and API documentation generationY CombinatorW23Acquired114 open roleschecked 2026-08-24
GluetrailAI

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

Developer toolsAI content generation for documentationY CombinatorW23Inactivechecked 2026-08-17
Helicone

LLM Observability for Developers

Developer toolsLLM observability and monitoringY CombinatorW23Acquiredchecked 2026-08-23
highlight.io

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

Developer toolsFull-stack monitoring and observabilityY CombinatorW23Acquired2026-08-23
IcePanel

Design and explain complex software architecture.

Developer toolsArchitecture diagramming and collaborationY CombinatorW23Activechecked 2026-08-23
IliadAI

Create adjustable procedural materials with agents.

Developer toolsAI-powered procedural material creation for artistsY CombinatorW23Activechecked 2026-08-23
IndexicalAI

AI-powered data extraction engine

Developer toolsAI-powered data extraction for developersY CombinatorW23Inactivechecked 2026-08-23
Magic PatternsAI

Go from idea to production with AI.

Developer toolsAI-powered design and prototypingY CombinatorW23Activechecked 2026-08-23
moonrepo

Open source build tool for monorepos and large codebases

Developer toolsMonorepo build system and cachingY CombinatorW23Inactivechecked 2026-08-23
Nango

A single API for all your integrations

Developer toolsIntegration platform for SaaS developersY CombinatorW23Activechecked 2026-08-23
NarrativeAI

AI agents for end-to-end testing

Developer toolsAI-powered end-to-end testingY CombinatorW23Active2026-08-23
NeptyneAI

The programmable spreadsheet.

Developer toolsAI-powered programmable spreadsheetY CombinatorW23Inactivechecked 2026-08-23
Noya Software

Product design tool that lets everyone design like a designer

Developer toolsdesign tool for non-designersY CombinatorW23Activechecked 2026-08-23
Omnistrate

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

Developer toolsSaaS deployment and containerization platformY CombinatorW23Activechecked 2026-08-23
OpenInt

Open Source Embedded Product Integrations

Developer toolsAPI integration platform for developersY CombinatorW23Acquiredchecked 2026-08-17
Outerbase

The interface for your database

Developer toolsAI-powered database interface and dashboard builderY CombinatorW23Acquiredchecked 2026-08-23
Pierre

Pierre is a new, opinionated, git platform.

Developer toolsAI-augmented git platformY CombinatorW23Active, new domain2026-08-23
Portalform

Build and host internal tools

Developer toolsinternal tools builder platformY CombinatorW23Activechecked 2026-08-23
Propexo

Plaid for Commercial Real Estate

Developer toolsCRE integration API platformY CombinatorW23Activechecked 2026-08-23
Reflex

The operating system for building mission-critical enterprise apps.

Developer toolsFull-stack app development frameworkY CombinatorW23Activechecked 2026-08-23
Resend

Email for developers

Developer toolsEmail API for developersY CombinatorW23Activechecked 2026-08-23
Sage AIAI

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

Developer toolsAI-powered codebase documentation and knowledgeY CombinatorW23Site unreachablechecked 2026-08-17
SecondAI

AI-Native Enterprise Codebase Maintenance

Developer toolsAI codebase maintenance and migrationsY CombinatorW23Inactivechecked 2026-08-24
SensorSurfAI

Resolve PR check failures instantly with AI

Developer toolsAI-powered PR check failure resolutionY CombinatorW23Inactivechecked 2026-08-23
Skyhook

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

Developer toolsKubernetes platform abstraction layerY CombinatorW23Activechecked 2026-08-23
SuperAPI

Programmable API gateway that makes APIs cacheable

Developer toolsAPI caching and gateway optimizationY CombinatorW23Activechecked 2026-08-23
TurntableAI

AI-native operating system for analytics teams

Developer toolsAI-native analytics pipeline builderY CombinatorW23Inactivechecked 2026-08-23
Wild MooseAI

Automating root cause analysis with generative AI

Developer toolsAI-powered incident root cause analysisY CombinatorW23Activechecked 2026-08-23