Y Combinator companies
The Y Combinator portfolio as the radar sees it: synced daily, classified into clusters, checked for life and movement. 6,198 companies.
clusterVertical AI agents 898Consumer 821B2B SaaS 787Fintech 633Developer tools 515Healthcare and bio 477Commerce and marketplaces 433Agent infrastructure 350Robotics and physical world 314Data for AI 192Security and compliance 189Horizontal AI assistants 152AI infra and compute 152Climate and energy 123Defense and space 85Other 44
| Company | Cluster | Program | Status | Last signal |
|---|---|---|---|---|
| Chatter Dead simple LLM testing and iteration | Developer toolsLLM testing and prompt iteration | Y CombinatorS23 | Acquired | checked 2026-08-23 |
| ContinueAI Pioneering open-source coding agent | Developer toolsopen-source coding agent | Y CombinatorS23 | Acquired | checked 2026-08-23 |
| Dioxus Labs Web, Desktop, and Mobile apps with one codebase in Rust | Developer toolsFull-stack app framework for Rust | Y CombinatorS23 | Acquired | checked 2026-08-23 |
| MochaAI Build and publish web apps in minutes. No coding required. | Developer toolsAI-powered no-code app builder | Y CombinatorS23 | Acquired | checked 2026-08-23 |
| Tremor The UI toolkit for Dashboards | Developer toolsDashboard UI component library | Y CombinatorS23 | Acquired | checked 2026-08-23 |
| Fern Instantly offer SDKs and API Docs | Developer toolsSDK and API documentation generation | Y CombinatorW23 | Acquired114 open roles | checked 2026-08-24 |
| Helicone LLM Observability for Developers | Developer toolsLLM observability and monitoring | Y CombinatorW23 | Acquired | checked 2026-08-23 |
| highlight.io The open source, fullstack monitoring platform: stop guessing why… | Developer toolsFull-stack monitoring and observability | Y CombinatorW23 | Acquired | 2026-08-23 |
| OpenInt Open Source Embedded Product Integrations | Developer toolsAPI integration platform for developers | Y CombinatorW23 | Acquired | checked 2026-08-17 |
| Outerbase The interface for your database | Developer toolsAI-powered database interface and dashboard builder | Y CombinatorW23 | Acquired | checked 2026-08-23 |